added new helper folder

git-svn-id: https://plugins.svn.wordpress.org/rb-gallery/trunk@1054662 b8457f37-d9ea-0310-8a92-e5e31aec5664
delete old files

git-svn-id: https://plugins.svn.wordpress.org/rb-gallery/trunk@1054663 b8457f37-d9ea-0310-8a92-e5e31aec5664