Disable work package add button if not signed in

frontend/app/work_packages/controllers/index.js

@@ -142,6 +142,7 @@ angular.module('openproject.workPackages.controllers')
     'HookService',
     '$window',
     'WorkPackageAttachmentsService',
+    'AuthorisationService',
     require('./work-package-show-controller')
   ])
   .controller('WorkPackagesController', [

frontend/app/work_packages/controllers/work-package-show-controller.js

@@ -56,9 +56,12 @@ module.exports = function($scope,
     PERMITTED_MORE_MENU_ACTIONS,
     HookService,
     $window,
-    WorkPackageAttachmentsService
+    WorkPackageAttachmentsService,
+    AuthorisationService
   ) {
 
+  $scope.can = AuthorisationService.can;
+  $scope.cannot = AuthorisationService.cannot;
 
   $scope.$on('$stateChangeSuccess', function(event, toState){
     latestTab.registerState(toState.name);