diff --git a/apiary.apib b/apiary.apib
index 202b44cf10..f9635a165e 100644
--- a/apiary.apib
+++ b/apiary.apib
@@ -188,15 +188,15 @@ Activity can be either _type Activity or _type Activity::Comment.
                 "_type": "Activity::Comment",
                 "_links": {
                     "self": {
-                        "href": "https://openproject.org/api/v3/activity/1",
+                        "href": "/api/v3/activity/1",
                         "title": "Priority changed from High to Low"
                     },
                     "workPackage": {
-                        "href": "https://openproject.org/api/v3/work_packages/1",
+                        "href": "/api/v3/work_packages/1",
                         "title": "quis numquam qui voluptatum quia praesentium blanditiis nisi"
                     },
                     "user": {
-                        "href": "https://openproject.org/api/v3/users/1",
+                        "href": "/api/v3/users/1",
                         "title": "John Sheppard - admin"
                     }
                 },
@@ -259,15 +259,15 @@ A user must have the permission to **edit journals** to update an activity. A
                 "_type": "Attachment",
                 "_links": {
                     "self": {
-                        "href": "https://openproject.org/api/v3/attachments/1",
+                        "href": "/api/v3/attachments/1",
                         "title": "dolor_sit_amet"
                     },
                     "workPackage" {
-                        "href": "https://openproject.org/api/v3/work_packages/1",
+                        "href": "/api/v3/work_packages/1",
                         "title": "Lorem ipsum"
                     },
                     "author": {
-                        "href": "https://openproject.org/api/v3/users/1",
+                        "href": "/api/v3/users/1",
                         "title": "John Sheppard - admin"
                     }
                 },
@@ -315,11 +315,11 @@ A user must have the permission to **edit journals** to update an activity. A
                 "_type": "Project",
                 "_links": {
                     "self": {
-                        "href": "https://openproject.org/api/v3/projects/1",
+                        "href": "/api/v3/projects/1",
                         "title": "Lorem"
                     },
                     "workPackages": [{
-                        "href": "https://openproject.org/api/v3/work_packages/1",
+                        "href": "/api/v3/work_packages/1",
                         "title": "Lorem ipsum"
                     }]
                 },
@@ -372,15 +372,15 @@ A user must have the permission to **edit journals** to update an activity. A
                 "_type": "Query",
                 "_links": {
                     "self": {
-                        "href": "https://openproject.org/api/v3/queries/2",
+                        "href": "/api/v3/queries/2",
                         "title": "My work packages"
                     },
                     "project": {
-                        "href": "https://openproject.org/api/v3/projects/1",
+                        "href": "/api/v3/projects/1",
                         "title": "Lorem ipsum"
                     },
                     "user": {
-                        "href": "https://openproject.org/api/v3/users/1",
+                        "href": "/api/v3/users/1",
                         "title": "John Sheppard - admin"
                     }
                 },
@@ -439,15 +439,15 @@ A user must have the permission to **edit journals** to update an activity. A
                 "_type": "Query",
                 "_links": {
                     "self": {
-                        "href": "https://openproject.org/api/v3/queries/2",
+                        "href": "/api/v3/queries/2",
                         "title": "My work packages"
                     },
                     "project": {
-                        "href": "https://openproject.org/api/v3/projects/1",
+                        "href": "/api/v3/projects/1",
                         "title": "Lorem ipsum"
                     },
                     "user": {
-                        "href": "https://openproject.org/api/v3/users/1",
+                        "href": "/api/v3/users/1",
                         "title": "John Sheppard - admin"
                     }
                 },
@@ -506,15 +506,15 @@ A user must have the permission to **edit journals** to update an activity. A
                 "_type": "Query",
                 "_links": {
                     "self": {
-                        "href": "https://openproject.org/api/v3/queries/2",
+                        "href": "/api/v3/queries/2",
                         "title": "My work packages"
                     },
                     "project": {
-                        "href": "https://openproject.org/api/v3/projects/1",
+                        "href": "/api/v3/projects/1",
                         "title": "Lorem ipsum"
                     },
                     "user": {
-                        "href": "https://openproject.org/api/v3/users/1",
+                        "href": "/api/v3/users/1",
                         "title": "John Sheppard - admin"
                     }
                 },
@@ -588,7 +588,7 @@ A user must have the permission to **edit journals** to update an activity. A
                 "_type": "User",
                 "_links": {
                     "self": {
-                        "href": "https://openproject.org/api/v3/users/1",
+                        "href": "/api/v3/users/1",
                         "title": "John Sheppard - j.sheppard"
                     }
                 },
@@ -622,7 +622,7 @@ A user must have the permission to **edit journals** to update an activity. A
                 "_type": "User",
                 "_links": {
                     "self": {
-                        "href": "https://openproject.org/api/v3/users/1",
+                        "href": "/api/v3/users/1",
                         "title": "John Sheppard - j.sheppard"
                     }
                 },
@@ -688,39 +688,39 @@ A user must have the permission to **edit journals** to update an activity. A
                 "_type": "WorkPackage",
                 "_links": {
                     "self": {
-                        "href": "https://openproject.org/api/v3/work_packages/1",
+                        "href": "/api/v3/work_packages/1",
                         "title": "quis numquam qui voluptatum quia praesentium blanditiis nisi"
                     },
                     "author": {
-                        "href": "https://openproject.org/api/v3/users/1",
+                        "href": "/api/v3/users/1",
                         "title": "John Sheppard - j.sheppard"
                     },
                     "responsible": {
-                        "href": "https://openproject.org/api/v3/users/1",
+                        "href": "/api/v3/users/1",
                         "title": "John Sheppard - j.sheppard"
                     },
                     "assignee": {
-                        "href": "https://openproject.org/api/v3/users/1",
+                        "href": "/api/v3/users/1",
                         "title": "John Sheppard - j.sheppard"
                     },
                     "project": {
-                        "href": "https://openproject.org/api/v3/projects/1",
+                        "href": "/api/v3/projects/1",
                         "title": "Lorem"
                     },
                     "activities": [{
-                        "href": "https://openproject.org/api/v3/activities/1",
+                        "href": "/api/v3/activities/1",
                         "title": "Priority changed from High to Low"
                     }],
                     "watchers": [{
-                        "href": "https://openproject.org/api/v3/users/1",
+                        "href": "/api/v3/users/1",
                         "title": "John Sheppard - j.sheppard"
                     }],
                     "relations": [{
-                        "href": "https://openproject.org/api/v3/relationships/1",
+                        "href": "/api/v3/relationships/1",
                         "title": "Work package A duplicated by Work package B"
                     }],
                     "attachments": [{
-                        "href": "https://openproject.org/api/v3/attachments/1",
+                        "href": "/api/v3/attachments/1",
                         "title": "Attachment filename"
                     }]
                 },
@@ -729,7 +729,7 @@ A user must have the permission to **edit journals** to update an activity. A
                         "_type": "User",
                         "_links": {
                             "self": {
-                                "href": "https://openproject.org/api/v3/users/1",
+                                "href": "/api/v3/users/1",
                                 "title": "John Sheppard - j.sheppard"
                             }
                         },
@@ -746,7 +746,7 @@ A user must have the permission to **edit journals** to update an activity. A
                         "_type": "User",
                         "_links": {
                             "self": {
-                                "href": "https://openproject.org/api/v3/users/1",
+                                "href": "/api/v3/users/1",
                                 "title": "John Sheppard - j.sheppard"
                             }
                         },
@@ -763,7 +763,7 @@ A user must have the permission to **edit journals** to update an activity. A
                         "_type": "User",
                         "_links": {
                             "self": {
-                                "href": "https://openproject.org/api/v3/users/1",
+                                "href": "/api/v3/users/1",
                                 "title": "John Sheppard - j.sheppard"
                             }
                         },
@@ -780,11 +780,11 @@ A user must have the permission to **edit journals** to update an activity. A
                         "_type": "Project",
                         "_links": {
                             "self": {
-                                "href": "https://openproject.org/api/v3/projects/1",
+                                "href": "/api/v3/projects/1",
                                 "title": "Lorem"
                             },
                             "workPackages": [{
-                                "href": "https://openproject.org/api/v3/work_packages/1",
+                                "href": "/api/v3/work_packages/1",
                                 "title": "Lorem ipsum"
                             }]
                         },
@@ -808,15 +808,15 @@ A user must have the permission to **edit journals** to update an activity. A
                             "_type": "Activity::Comment",
                             "_links": {
                                 "self": {
-                                    "href": "https://openproject.org/api/v3/activities/1",
+                                    "href": "/api/v3/activities/1",
                                     "title": "Priority changed from High to Low"
                                 },
                                 "workPackage": {
-                                    "href": "https://openproject.org/api/v3/work_packages/1",
+                                    "href": "/api/v3/work_packages/1",
                                     "title": "quis numquam qui voluptatum quia praesentium blanditiis nisi"
                                 },
                                 "user": {
-                                    "href": "https://openproject.org/api/v3/users/1",
+                                    "href": "/api/v3/users/1",
                                     "title": "John Sheppard - admin"
                                 }
                             },
@@ -834,11 +834,11 @@ A user must have the permission to **edit journals** to update an activity. A
                             "_type": "User",
                             "_links": {
                                 "self": {
-                                    "href": "https://openproject.org/api/v3/users/1",
+                                    "href": "/api/v3/users/1",
                                     "title": "John Sheppard - j.sheppard"
                                 },
                                 "unwatch": {
-                                    "href": "https://openproject.org/api/v3/work_packages/1/watchers/1",
+                                    "href": "/api/v3/work_packages/1/watchers/1",
                                     "method": "delete",
                                     "title": "Unwatch work package"
                                 }
@@ -858,15 +858,15 @@ A user must have the permission to **edit journals** to update an activity. A
                             "_type": "Relationship",
                             "_links": {
                                 "self": {
-                                    "href": "https://openproject.org/api/v3/relationships/1",
+                                    "href": "/api/v3/relationships/1",
                                     "title": "Work package A duplicated by Work package B"
                                 },
                                 "workPackage": {
-                                    "href": "https://openproject.org/api/v3/work_packages/1",
+                                    "href": "/api/v3/work_packages/1",
                                     "title": "quis numquam qui voluptatum quia praesentium blanditiis nisi"
                                 },
                                 "relatedWorkPackage": {
-                                    "href": "https://openproject.org/api/v3/work_packages/2",
+                                    "href": "/api/v3/work_packages/2",
                                     "title": "Lorem ipsum"
                                 }
                             },
@@ -884,15 +884,15 @@ A user must have the permission to **edit journals** to update an activity. A
                             "_type": "Attachment",
                             "_links": {
                                 "self": {
-                                    "href": "https://openproject.org/api/v3/attachments/1",
+                                    "href": "/api/v3/attachments/1",
                                     "title": "Attachment filename"
                                 },
                                 "workPackage": {
-                                    "href": "https://openproject.org/api/v3/work_packages/1",
+                                    "href": "/api/v3/work_packages/1",
                                     "title": "quis numquam qui voluptatum quia praesentium blanditiis nisi"
                                 },
                                 "author": {
-                                    "href": "https://openproject.org/api/v3/users/1",
+                                    "href": "/api/v3/users/1",
                                     "title": "Users login"
                                 }
                             },
@@ -950,59 +950,59 @@ A user must have the permission to **edit journals** to update an activity. A
                 "_type": "WorkPackage",
                 "_links": {
                     "self": {
-                        "href": "https://openproject.org/api/v3/work_packages/1",
+                        "href": "/api/v3/work_packages/1",
                         "title": "quis numquam qui voluptatum quia praesentium blanditiis nisi"
                     },
                     "author": {
-                        "href": "https://openproject.org/api/v3/users/1",
+                        "href": "/api/v3/users/1",
                         "title": "John Sheppard - j.sheppard"
                     },
                     "responsible": {
-                        "href": "https://openproject.org/api/v3/users/1",
+                        "href": "/api/v3/users/1",
                         "title": "John Sheppard - j.sheppard"
                     },
                     "assignee": {
-                        "href": "https://openproject.org/api/v3/users/1",
+                        "href": "/api/v3/users/1",
                         "title": "John Sheppard - j.sheppard"
                     },
                     "project": {
-                        "href": "https://openproject.org/api/v3/projects/1",
+                        "href": "/api/v3/projects/1",
                         "title": "Lorem"
                     },
                     "activities": [{
-                        "href": "https://openproject.org/api/v3/activities/1",
+                        "href": "/api/v3/activities/1",
                         "title": "Priority changed from High to Low"
                     }],
                     "watchers": [{
-                        "href": "https://openproject.org/api/v3/users/1",
+                        "href": "/api/v3/users/1",
                         "title": "John Sheppard - j.sheppard"
                     }],
                     "addWatcher": [{
-                        "href": "https://openproject.org/api/v3/work_packages/1/watchers,
+                        "href": "/api/v3/work_packages/1/watchers,
                         "title": "John Sheppard"
                     }],
                     "removeWatcher": [{
-                        "href": "https://openproject.org/api/v3/work_packages/1/watchters{/id}",
+                        "href": "/api/v3/work_packages/1/watchters{/id}",
                         "title": "John Sheppard",
                         "templated": true
                     }],
                     "watch": {
-                        "href": "https://openproject.org/api/v3/work_packages/1/watchers",
+                        "href": "/api/v3/work_packages/1/watchers",
                         "method": "post",
                         "data": "{ "user_id": 1 }",
                         "title": "Watch work package"
                     },
                     "unwatch": {
-                        "href": "https://openproject.org/api/v3/work_packages/1/watchers/1",
+                        "href": "/api/v3/work_packages/1/watchers/1",
                         "method": "delete",
                         "title": "Unwatch work package"
                     },
                     "relations": [{
-                        "href": "https://openproject.org/api/v3/relationships/1",
+                        "href": "/api/v3/relationships/1",
                         "title": "Work package A duplicated by Work package B"
                     }],
                     "attachments": [{
-                        "href": "https://openproject.org/api/v3/attachments/1",
+                        "href": "/api/v3/attachments/1",
                         "title": "Attachment filename"
                     }]
                 },
@@ -1011,7 +1011,7 @@ A user must have the permission to **edit journals** to update an activity. A
                         "_type": "User",
                         "_links": {
                             "self": {
-                                "href": "https://openproject.org/api/v3/users/1",
+                                "href": "/api/v3/users/1",
                                 "title": "John Sheppard - j.sheppard"
                             }
                         },
@@ -1028,7 +1028,7 @@ A user must have the permission to **edit journals** to update an activity. A
                         "_type": "User",
                         "_links": {
                             "self": {
-                                "href": "https://openproject.org/api/v3/users/1",
+                                "href": "/api/v3/users/1",
                                 "title": "John Sheppard - j.sheppard"
                             }
                         },
@@ -1045,7 +1045,7 @@ A user must have the permission to **edit journals** to update an activity. A
                         "_type": "User",
                         "_links": {
                             "self": {
-                                "href": "https://openproject.org/api/v3/users/1",
+                                "href": "/api/v3/users/1",
                                 "title": "John Sheppard - j.sheppard"
                             }
                         },
@@ -1062,11 +1062,11 @@ A user must have the permission to **edit journals** to update an activity. A
                         "_type": "Project",
                         "_links": {
                             "self": {
-                                "href": "https://openproject.org/api/v3/projects/1",
+                                "href": "/api/v3/projects/1",
                                 "title": "Lorem"
                             },
                             "workPackages": [{
-                                "href": "https://openproject.org/api/v3/work_packages/1",
+                                "href": "/api/v3/work_packages/1",
                                 "title": "Lorem ipsum"
                             }]
                         },
@@ -1090,15 +1090,15 @@ A user must have the permission to **edit journals** to update an activity. A
                             "_type": "Activity::Comment",
                             "_links": {
                                 "self": {
-                                    "href": "https://openproject.org/api/v3/activities/1",
+                                    "href": "/api/v3/activities/1",
                                     "title": "Priority changed from High to Low"
                                 },
                                 "workPackage": {
-                                    "href": "https://openproject.org/api/v3/work_packages/1",
+                                    "href": "/api/v3/work_packages/1",
                                     "title": "quis numquam qui voluptatum quia praesentium blanditiis nisi"
                                 },
                                 "user": {
-                                    "href": "https://openproject.org/api/v3/users/1",
+                                    "href": "/api/v3/users/1",
                                     "title": "John Sheppard - admin"
                                 }
                             },
@@ -1116,7 +1116,7 @@ A user must have the permission to **edit journals** to update an activity. A
                             "_type": "User",
                             "_links": {
                                 "self": {
-                                    "href": "https://openproject.org/api/v3/users/1",
+                                    "href": "/api/v3/users/1",
                                     "title": "John Sheppard - j.sheppard"
                                 }
                             },
@@ -1135,15 +1135,15 @@ A user must have the permission to **edit journals** to update an activity. A
                             "_type": "Relationship",
                             "_links": {
                                 "self": {
-                                    "href": "https://openproject.org/api/v3/relationships/1",
+                                    "href": "/api/v3/relationships/1",
                                     "title": "Work package A duplicated by Work package B"
                                 },
                                 "workPackage": {
-                                    "href": "https://openproject.org/api/v3/work_packages/1",
+                                    "href": "/api/v3/work_packages/1",
                                     "title": "quis numquam qui voluptatum quia praesentium blanditiis nisi"
                                 },
                                 "relatedWorkPackage": {
-                                    "href": "https://openproject.org/api/v3/work_packages/2",
+                                    "href": "/api/v3/work_packages/2",
                                     "title": "Lorem ipsum"
                                 }
                             },
@@ -1161,15 +1161,15 @@ A user must have the permission to **edit journals** to update an activity. A
                             "_type": "Attachment",
                             "_links": {
                                 "self": {
-                                    "href": "https://openproject.org/api/v3/attachments/1",
+                                    "href": "/api/v3/attachments/1",
                                     "title": "Attachment filename"
                                 },
                                 "workPackage": {
-                                    "href": "https://openproject.org/api/v3/work_packages/1",
+                                    "href": "/api/v3/work_packages/1",
                                     "title": "quis numquam qui voluptatum quia praesentium blanditiis nisi"
                                 },
                                 "author": {
-                                    "href": "https://openproject.org/api/v3/users/1",
+                                    "href": "/api/v3/users/1",
                                     "title": "Users login"
                                 }
                             },