LB-1267: Disable the image advertising feature on citizen branch

Done
LB-1163: As an editor, I want to filter posts on chained blog source by verification status and assigned user

Partial design added.
Merge pull request #507 from nistormihai/citizen

LB-1163: As an editor, I want to filter posts on chained blog source by ...
Merge pull request #505 from vladnicoara/cit-bug

LB-1267: Disable the image advertising feature on citizen branch