LB-1155: Strange checkbox visual behavior

Fixed
Merge pull request #520 from vladnicoara/master

LB-1155: Strange checkbox visual behavior
LB-1243
:
List of the collaborators shows users that are already collaborators
Merge pull request #521 from ioanpocol/master

LB-1243
LB-1164: As an editor, I want to filter posts on the timeline by verification status and assigned user

Removed filter by type.
Merge pull request #522 from nistormihai/master-to-delete

LB-1164: As an editor, I want to filter posts on the timeline by verific...