fix misstyped passwords leaked in log files with redmine auth provider

mereth

2014-08-18 2445d4b2b80671bdcefbd4ed81f394a5249ee13d

 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");