Fixes so that editing a realm in two different windows works as expected, all updates are shown everywhere
Merged primary master, made some small changes
Merge branch 'master' of http://github.com/Realm/realm-cocoa into gk-browser-fix-simultaneous-editing
Merge pull request #891 from GreatApe/gk-browser-fix-simultaneous-editing

Fixes so that editing a realm in two different windows works as expected...