Notifications part 1
Merge remote-tracking branch 'upstream/master'
Notifications part 2
Create notification for mentioned users
Merge pull request #196 from Somesh/master

added restart flow
Move notification websocket to web handler
Merge remote-tracking branch 'upstream/master'
Notification API now accepts list of users for bulk fetch
POST on notification handler now marks all unread notifications as read
Don't check for is_read when fetching all notifications for user
Merge pull request #197 from Checksum/master

Notifications
Merge pull request #198 from Somesh/master

sprint analytics data for the heat map
added sprint metadata
updating the project object before creating the user map