bug fix, allow headers translations

git-svn-id: https://plugins.svn.wordpress.org/rtl-tester/trunk@980060 b8457f37-d9ea-0310-8a92-e5e31aec5664
update pot file

git-svn-id: https://plugins.svn.wordpress.org/rtl-tester/trunk@980084 b8457f37-d9ea-0310-8a92-e5e31aec5664
update stable tag

git-svn-id: https://plugins.svn.wordpress.org/rtl-tester/trunk@980439 b8457f37-d9ea-0310-8a92-e5e31aec5664