Tidy up settings page

git-svn-id: https://plugins.svn.wordpress.org/ml-slider/trunk@774652 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updating lang files

git-svn-id: https://plugins.svn.wordpress.org/ml-slider/trunk@774653 b8457f37-d9ea-0310-8a92-e5e31aec5664