Re-add translation strings for custom icons

grapheditorxblock/src/js/grapheditorxblock.js

@@ -5,6 +5,9 @@ function GraphEditorXBlock(runtime, element, data) {
     var bundle = mxResources.getDefaultBundle(RESOURCE_BASE, mxLanguage)
         //|| mxResources.getSpecialBundle(RESOURCE_BASE, mxLanguage);
 
+    // Add indie resources.
+    mxResources.add(mxClient.basePath + '/resources/icons');
+
     // Fixes possible asynchronous requests
     mxUtils.getAll([bundle, [data.resource_url]], function(xhr)
     {

grapheditorxblock/src/translations/icons.txt

+custom-png=Custom PNG
+custom-svg=Custom SVG
+custom-xml=Custom XML

grapheditorxblock/src/translations/icons_de.txt

+custom-png=Benutzerdefinierte PNG
+custom-svg=Benutzerdefinierte SVG
+custom-xml=Benutzerdefinierte XML