LB-1172: As an admin, I want that post updates propagate on chained blogs

Issue for published posts.
LB-1172: As an admin, I want that post updates propagate on chained blogs

Work in progress.
LB-1172: As an admin, I want that post updates propagate on chained blogs

Added special posts for chain and deleted.
Merge pull request #460 from nistormihai/citizen

Citizen