Implemented ticket-57

Eddy Young

2015-05-19 aca08ed7e7b42f233a8a91d8059f0beb50d6983d

 src/main/java/com/gitblit/wicket/ExternalImage.java

@@ -27,6 +27,7 @@
      super(id, new Model<String>(url));

   }



   @Override

   protected void onComponentTag(ComponentTag tag) {

      super.onComponentTag(tag);

      checkComponentTag(tag, "img");