MS DG IZ major invite refactor. all tests are green minus weird stuff on dans computer, need to checkout this out on pivots

Bad solution for making sure that an invited facebook user is marked immediately as having been invited

Put a select limit on the person query on contactsController index, since we know exactly what we're doing with the data

Fix 500 on invitations new on unknown facebook user... bad solution, maybe we should just delete the offending invitations?

Make resque job specs specific about what error should be raised; fix expectation on hoptoad notifier

Fix errors when trying to mail comment notifications to post authors on posts other than status messages

add hovercards back to mentions, reorganized some helpers, made getting started view mobile accessible

Protect ourselves from problems with youtube title serialization by rescuing type mismatches in the marshaller.