issue-350: Fixes issue when an apostrophe is present in a User's name

Alex Lewis

2013-12-10 06fa257080ab8de7986ad5debbf317eddf5608e7

 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");