(#544) - Share strategy backend
#(544) - Sharing strategy functionality
(#544) - Sharing strategies
Merge branch 'master' into share-strategy
(#544) - Allow to share with 0 users
(#544) - Proper unbinding
Remove deprecation warning
(#544) - Email users you've shared with
Merge pull request #553 from benrudolph/master

Updates 5-8-2014