Add option for link to wordpress.org plugin page

git-svn-id: https://plugins.svn.wordpress.org/more-plugin-info/trunk@822363 b8457f37-d9ea-0310-8a92-e5e31aec5664
Stable tag bump

git-svn-id: https://plugins.svn.wordpress.org/more-plugin-info/trunk@822380 b8457f37-d9ea-0310-8a92-e5e31aec5664