LB-2 : User publishing the feed is not mentioned on Collaborators Tab, Timeline, Embed URL

First commit
LB-2 : User publishing the feed is not mentioned on Collaborators Tab, Timeline, Embed URL

Added creator info for feed items on timeline
LB-2 : User publishing the feed is not mentioned on Collaborators Tab, Timeline, Embed URL

Added creator info for edit and colabs tabs
LB-22: Create a design on timeline, collaborator and edit for sources

Soundcloud css fix
LB-2 : User publishing the feed is not mentioned on Collaborators Tab, Timeline, Embed URL

Done
Merge branch 'lb-2-add-creator-for-feed-items' into devel

Conflicts:
	plugins/livedesk/gui-resources/scripts/js/providers/colabs.js
	plugins/livedesk/gui-resources/templates/providers/colabs/items.dust
	plugins/livedesk/gui-resources/templates/providers/soundcloud/post.dust
	plugins/livedesk/gui-resources/templates/providers/youtube/post.dust
LB-2 : User publishing the feed is not mentioned on Collaborators Tab, Timeline, Embed URL

Merge conflict