1.5.6 Trunk - * "Unused Tags clean-up" option made a problem on some WordPress sites that it deletes empty categories. Since I am unable to replicate this problem. I am making this option disabled. * Translations updates and 3 new languages added. * Minor maintenance and fixes.

git-svn-id: https://plugins.svn.wordpress.org/wp-optimize/trunk@808131 b8457f37-d9ea-0310-8a92-e5e31aec5664