NR-887 : Article-> Add files from Media Archive - GUI issues

Fixed
LB-692: Stt issues

fixed.
Merge pull request #37 from nistormihai/master

LB-692: Stt issues
LB-694: Fix cache for admin

Added in start.html, images isn't resolved yet.
NR-977 : Main Navigation concept for Superdesk

CSS done
Buttons styling

Shadow fix
Merge pull request #38 from nistormihai/master

LB-694: Fix cache for admin
LB-689 : Styling for comments as a content source

Fixed
LB-690 : FF browser -> Longer SMS text without spaces is not rendered well in timeline

Fixed
LB-686: Help button does not work:

Fixed.
LB-496: AdminUI->google tab-> searching rotating control ends up for a while on some specific keywords

Fixed.
Merge pull request #39 from eozan/LB-686

LB-686: Help button does not work
Merge pull request #36 from nidzix/nr-893-media-archive-CSS-fix

CSS update for several tasks:
	 NR-887 : Article-> Add files from Media Archive - GUI issues
	 NR-977 : Main Navigation concept for Superdesk
	 Buttons styling
	 LB-689 : Styling for comments as a content source
	 LB-690 : FF browser -> Longer SMS text without spaces is not rendered
Merge pull request #40 from eozan/LB-496

LB-496: AdminUI->google tab-> searching rotating control ends up for a w...
Merge remote-tracking branch 'sourcefabric/master' into devel
LB-683 : Create the user comment

Added the captcha gateway and captcha service.
LB-482 : User Comments source plugin

Finalized captcha gateway service