Merge branch 'master' into community-and-collection-forms

Conflicts:
	src/app/core/data/item-data.service.spec.ts
	src/app/core/data/item-data.service.ts
	src/app/core/shared/operators.spec.ts
	src/app/core/shared/operators.ts
	src/app/shared/shared.module.ts

config/environment.default.js

@@ -59,5 +59,25 @@ module.exports = {
   // Log directory
   logDirectory: '.',
   // NOTE: will log all redux actions and transfers in console
-  debug: false
+  debug: false,
+  // Default Language in which the UI will be rendered if the user's browser language is not an active language
+  defaultLanguage: 'en',
+  // Languages. DSpace Angular holds a message catalog for each of the following languages. When set to active, users will be able to switch to the use of this language in the user interface.
+  languages: [{
+    code: 'en',
+    label: 'English',
+    active: true,
+  }, {
+    code: 'de',
+    label: 'Deutsch',
+    active: true,
+  }, {
+    code: 'cs',
+    label: 'Čeština',
+    active: true,
+  }, {
+    code: 'nl',
+    label: 'Nederlands',
+    active: false,
+  }]
 };