Update to 3.1

git-svn-id: https://plugins.svn.wordpress.org/ppinger/trunk@971829 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update tested up to tag to 3.9.2

git-svn-id: https://plugins.svn.wordpress.org/ppinger/trunk@971832 b8457f37-d9ea-0310-8a92-e5e31aec5664