add site documentation for HTTP header authentication

Joel Johnson

2015-06-29 0b298b78a7c1fcda7f799af0c045a6c2e829a6bf

 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");