compare link added 

git-svn-id: https://plugins.svn.wordpress.org/quick-bar/trunk@860712 b8457f37-d9ea-0310-8a92-e5e31aec5664
error reporting updated

git-svn-id: https://plugins.svn.wordpress.org/quick-bar/trunk@860748 b8457f37-d9ea-0310-8a92-e5e31aec5664