* Fixes issues with signup form not assigning subscription.
* Fixes problem with invite codes not being removed when option is selected.  
* Fixes some old deprecated PHP code (e.g. using Global and not global)
* Change log and version change.

git-svn-id: https://plugins.svn.wordpress.org/membership/trunk@1025519 b8457f37-d9ea-0310-8a92-e5e31aec5664