LB-282 : Instagram/Flicker metadata

Done
LB-372 : Chained blogs list - design

Basic structure finished
Merge branch 'devel' of dev.sourcefabric.org:superdesk into devel
LB-350: Chaing blogs

Added configuration for outputlink
Merge remote-tracking branch 'origin/devel' into 350-chain-blogs
LB-372 : Chained blogs list - design

"Add Source popup" added
Merge branch '350-chain-blogs' of git://github.com/sourcefabric/Superdesk into 350-chain-blogs
Merge branch '350-chain-blogs' of github.com:petrjasek/Superdesk into 350-chain-blogs
Initial manage feeds view commit.

Define ManageFeedsView and trigger it via router.