LB-849 : Add the option to hide posts on collaborators, SMS, chained blogs and user comments

Add the option to hide posts on collaborators, SMS, chained blogs and
user comments

The chained blogs are now read by the backend and on chained blog source
all posts are read from local instance through the
getUnpublishedBySource service
LB-849

Add the option to hide posts on collaborators, SMS, chained blogs and user comments
LB-849  Add the option to hide posts on collaborators, SMS, chained blogs and user comments

Added support to get the list of chained blog sources by blogId
LB-879 : Add new functionality to Live Blog posts needed for the Citizen Desk verification workflow - assign post, change status
Merge branch 'devel' of https://github.com/ioanpocol/Superdesk into devel
LB-849
:
Hide chained blog, collaborator, SMS and user comments posts

Added support for hide/unhide posta and here are the example URLs:
http://localhost:8080/resources/LiveDesk/Blog/1/Post/13/Hide
http://localhost:8080/resources/LiveDesk/Blog/1/Post/13/Unhide
LB-879 	  Add new functionality to Live Blog posts needed for the Citizen Desk verification workflow - assign post, change status
LB-1147 : Hide user comments

Added isDeleted parameter to the list of unpublished comments:
localhost:8080/resources/LiveDesk/Blog/1/Post/Comment?isDeleted=False

The same url for Publish, Unpublish, Hide and Unhide are used as in the
case of chained blog and other sources:

http://localhost:8080/resources/LiveDesk/Blog/1/Post/18/{Publish | Unpublish | Hide | Unhide}

By above publish URL also the post will dissapear from source after it
is published
LB-1147: Hide user comments

The autoupdate still needs to be fixed
LB-1190: Assign widow issues

fixed.
LB-1147

Hide user comments
LB-1160: hide comments

start-sources.bat change
LB-1147: Hide user comments

The autoupdate still needs to be fixed
LB-1147

Hide user comments
LB-1160: hide comments

start-sources.bat change
Merge branch 'hide-posts' of https://github.com/vladnicoara/Superdesk into hide-posts

Conflicts:
	plugins/livedesk-sync/livedesk/core/impl/blog_sync.py
	plugins/superdesk-verification/__plugin__/superdesk_verification/populate_default_data.py
	plugins/superdesk-verification/superdesk/verification/impl/verification.py
	plugins/superdesk-verification/superdesk/verification/meta/verification.py
LB-1160: hide comments

Merged files
Merge pull request #403 from nistormihai/lb-citizen-desk

LB-1190: Assign widow issues
Merge pull request #405 from vladnicoara/hide-posts

LB-1160: hide comments
On embed replace "updated on 14:50" with "updated at 14:50"