added Persian translation

git-svn-id: https://plugins.svn.wordpress.org/lessbuttons/trunk@991683 b8457f37-d9ea-0310-8a92-e5e31aec5664
added Persian translation

git-svn-id: https://plugins.svn.wordpress.org/lessbuttons/trunk@991684 b8457f37-d9ea-0310-8a92-e5e31aec5664