added Norwegian translation

git-svn-id: https://plugins.svn.wordpress.org/lessbuttons/trunk@987094 b8457f37-d9ea-0310-8a92-e5e31aec5664
added Norwegian translation

git-svn-id: https://plugins.svn.wordpress.org/lessbuttons/trunk@987095 b8457f37-d9ea-0310-8a92-e5e31aec5664