Added ability to target the search page.
Added ability to remove all settings from a post/page
Fixed some undefined variable notices
Added organization features for plugin filters using the plugin filter groups.  Can now view all plugins in a group and sort the list by group and permalink.

git-svn-id: https://plugins.svn.wordpress.org/plugin-organizer/trunk@1044649 b8457f37-d9ea-0310-8a92-e5e31aec5664