Update user json to reflect user suspension

www.agileplannerapp.com/boards/173808/cards/5886

Add a disabled flag to the user json that gets
synced with the user's apps, so that they can
treat suspended users differently.

Exclude permission information to be sent for a
suspended user, because the suspended user should
not be able to perform any operation. Whenever the
user's account gets un-suspended we can send the
correct permissions back to the user's apps.
Sync permissions with user's apps on suspension

www.agileplannerapp.com/boards/173808/cards/5886

Updated the inactive user suspender to log-out
the user from all apps when they're suspended.
Rake to push permissions information to apps

www.agileplannerapp.com/boards/173808/cards/5886

Will be used during deploy to sync user permission
to apps that they have permissions to use.
Merge pull request #288 from alphagov/propogate-suspension-status-of-users

Propogate suspension status of users