Fixed Uncaught TypeError MultipleFiles (#1416)

* Removed static Text from settings page, replaced with language identifiers

* removed "east germany", since 1989 germany is one country ;)

* removed static text from filter widget

* Fixed Uncaught TypeError MultipleFiles

because Element has no data Attributes, changed to get parent data attributes

* Fixed Uncaught TypeError MultipleFiles

changed edit-item event

app/core/interfaces/multiple_files.js

@@ -30,7 +30,7 @@ define([
     events: {
       'click .js-button': 'onClickButton',
       'click .js-remove': 'removeItem',
-      'click .js-image': 'editItem'
+      'click .js-file': 'editItem'
     },
 
     onClickButton: function (event) {