Minor changes and a couple bug fixes

git-svn-id: https://plugins.svn.wordpress.org/responsive-ad-shortcodes/trunk@1051775 b8457f37-d9ea-0310-8a92-e5e31aec5664
More minor bug fixes

git-svn-id: https://plugins.svn.wordpress.org/responsive-ad-shortcodes/trunk@1051781 b8457f37-d9ea-0310-8a92-e5e31aec5664