Update POT for 1.5

git-svn-id: https://plugins.svn.wordpress.org/buddypress-docs/trunk@769274 b8457f37-d9ea-0310-8a92-e5e31aec5664
Bumps stable tag to 1.5

git-svn-id: https://plugins.svn.wordpress.org/buddypress-docs/trunk@769277 b8457f37-d9ea-0310-8a92-e5e31aec5664