2.9.1 Release

git-svn-id: https://plugins.svn.wordpress.org/wp-members/trunk@873094 b8457f37-d9ea-0310-8a92-e5e31aec5664
revised wp-members.pot localization template for 2.9.1

git-svn-id: https://plugins.svn.wordpress.org/wp-members/trunk@873097 b8457f37-d9ea-0310-8a92-e5e31aec5664