Provide corrections from preliminary review

This commit:

* fixes superfluous and invalid interpolation of project and user link titles
* uses revision getter consistently
* adds `_link/revisions` to work packages

lib/api/v3/repositories/revision_representer.rb

@@ -41,14 +41,14 @@ module API
         link :project do
           {
             href: api_v3_paths.project(represented.project.id),
-            title: "#{represented.project.name}"
+            title: represented.project.name
           }
         end
 
         link :author do
           {
             href: api_v3_paths.user(represented.user.id),
-            title: "#{represented.user.name} - #{represented.user.login}"
+            title: represented.user.name
           } unless represented.user.nil?
         end
 

lib/api/v3/repositories/revisions_api.rb

@@ -38,14 +38,14 @@ module API
               attr_reader :revision
 
               def revision_representer
-                RevisionRepresenter.new(@revision)
+                RevisionRepresenter.new(revision)
               end
             end
 
             before do
               @revision = Changeset.find(params[:id])
 
-              authorize(:view_changesets, context: @revision.project) do
+              authorize(:view_changesets, context: revision.project) do
                 raise API::Errors::NotFound.new
               end
             end

lib/api/v3/utilities/path_helper.rb

@@ -204,6 +204,10 @@ module API
             "#{work_package_relations(work_package_id)}/#{id}"
           end
 
+          def self.work_package_revisions(id)
+            "#{work_package(id)}/revisions"
+          end
+
           def self.work_package_schema(project_id, type_id)
             "#{root}/work_packages/schemas/#{project_id}-#{type_id}"
           end

lib/api/v3/work_packages/work_package_representer.rb

@@ -128,6 +128,12 @@ module API
           } if current_user_allowed_to(:add_work_package_watchers, context: represented.project)
         end
 
+        link :revisions do
+          {
+            href: api_v3_paths.work_package_revisions(represented.id)
+          } if current_user_allowed_to(:view_changesets, context: represented.project)
+        end
+
         link :watch do
           {
             href: api_v3_paths.work_package_watchers(represented.id),