Rolling back to 2.5-beta2

git-svn-id: https://plugins.svn.wordpress.org/ml-slider/trunk@810225 b8457f37-d9ea-0310-8a92-e5e31aec5664
Fix warning/error

git-svn-id: https://plugins.svn.wordpress.org/ml-slider/trunk@810226 b8457f37-d9ea-0310-8a92-e5e31aec5664