Merge branch 'dev' into will

Conflicts:
	frontend/Popcorn/Popcorn/view/rate/PCReviewMovieViewController.m
removed search bar from social screen
Generated dummy comments for likes, so that likes appear in a review's comments list ...
Merge branch 'dev' into will
added results not found label for search and only load backdrop images in explore on screen
review ui
load explore backdrop only when on screen fix
merge
Merge branch 'dev' of https://github.com/joshuabell/popcorn into dev
changed height of table view in social screen to account for removed search bar
on account creation connect with facebook friends
on login connect with facebook friends
Tweaked the unread notifications indication to only show the number of new notifications since the last time the user opened the notifications window …
  Added a new endpoint to store the timestamp of the last seen ( not necessarily read ) notification ( stored in user's data )
  Stored the timestamp of the last notification seen in the user's data, downloaded with the rest of the logged in user's data at start up ( forced a timestamp of 0 when none previously exists )
  Number of notifications indicator shows number of notifications with a timestamp greater than that of the last seen notification
  When the notification window is opened, the last seen timestamp is updated to the most recent notification currently in the window ( this is also updated on the user in the backend via the new endpoint )
Merge branch 'dev' into will
Fix for 64bit maths in 32bits …
  The resulting value is too large for an int to hold, so we need to promote it to a long ( otherwise we end up with 2weeks rather than 2months )
makes facebook following/followers of friends
few extra stuffs
reverted the feed to like&comment buttons
Merge branch 'dev' of https://github.com/joshuabell/popcorn into dev
explore improvements