Group the invites by status and hide their status

[pandeykartikey]

Currently, The invites are returned along with status attached with each invite. We should remove the status and group it by the status types and return. This would make parsing at the frontend easier.

Occurence in Code:

quark/src/App/Http/Controllers/TeamController.php

Line 93 in a0e704a

// TODO: Group by status and hide the status

quark/src/App/Http/Controllers/UserController.php

Line 91 in a0e704a

// TODO: Group by status and hide the status in invites

Reference: https://laravel.com/docs/5.3/queries#ordering-grouping-limit-and-offset