Avoid using ProjectService when projectIdentifier is null

frontend/app/components/work-packages/directives/wp-create-button/wp-create-button.directive.js

@@ -54,12 +54,15 @@ function WorkPackageCreateButtonController(AuthorisationService, EditableFieldsS
 
   vm.text = I18n.t('js.toolbar.unselected_title');
   vm.isDisabled = function () {
-    return EditableFieldsState.editAll.state
-      || AuthorisationService.cannot('work_package', 'create')
-      && AuthorisationService.cannot('work_package', 'duplicate');
+    return vm.projectIdentifier
+      || EditableFieldsState.editAll.state
+      || (AuthorisationService.cannot('work_package', 'create')
+        && AuthorisationService.cannot('work_package', 'duplicate'));
   };
 
+  if (vm.projectIdentifier) {
     ProjectService.getProject(vm.projectIdentifier).then(function(project) {
       vm.types = project.embedded.types;
     });
   }
+}

spec/features/work_packages/navigation_spec.rb

@@ -28,7 +28,7 @@
 
 require 'spec_helper'
 
-RSpec.feature 'Work package navigation', selenium: true do
+RSpec.feature 'Work package navigation', js: true, selenium: true do
   let(:user) { FactoryGirl.create(:admin) }
   let(:project) { FactoryGirl.create(:project) }
   let(:work_package) { FactoryGirl.build(:work_package, project: project) }
@@ -37,7 +37,7 @@ RSpec.feature 'Work package navigation', selenium: true do
     login_as(user)
   end
 
-  scenario 'all different angular based work package views', js: true do
+  scenario 'all different angular based work package views' do
     work_package.save!
 
     # deep link global work package index
@@ -95,7 +95,7 @@ RSpec.feature 'Work package navigation', selenium: true do
     full_work_package.ensure_page_loaded
   end
 
-  scenario 'show 404 upon wrong url', js: true do
+  scenario 'show 404 upon wrong url' do
     visit '/work_packages/0'
 
     expect(page).to have_selector('.errorExplanation',