Delete faulty language files

git-svn-id: https://plugins.svn.wordpress.org/mk-simple-backups/trunk@892863 b8457f37-d9ea-0310-8a92-e5e31aec5664
adding further icons

git-svn-id: https://plugins.svn.wordpress.org/mk-simple-backups/trunk@892864 b8457f37-d9ea-0310-8a92-e5e31aec5664