LB-8: Tageswoche livedesk:mobile issues (IOS)

fixed default theme.
revert LB-56 : Add the source key to the Source(superdesk-source) model
Made ffmpeg the default thumbnail generator

We still have issues with GraphicsMagick not working on different systems
LB-306 : Change names of users and live blog in default demo database
LB-306 : Change names of users and live blog in default demo database
LB-349: Share functionality does not work on default embed templates

Embed now has default theme.
LB-433 : Twitter search: urls in a tweet

Done
Removed dependency between livedesk plugin and content-article

The blog post service was using the AsLikeAll criteria from the
content-article plugin.
LB-425: Integration with SMS Gateway
* some simple attempt
LB-212: Livedesk embed doesn't work

fixed configure.
LB-435: Upload avatar

fixed style for configure.
LB-421: Create embed theme for STT

Added missing facebook item source.
Merge pull request #22 from nistormihai/devel

Devel
LB-427: Add SMS source - Design

Added sms provider.
LB-427: Add SMS source - Design

fixed line endings.
Merge pull request #1 from nistormihai/427-sms-source

427 sms source
LB-499: Add provider no action

Use xfilter for creating new providers so it gets
data needed for rendering.
LB-499: Add provider no action

Fix external blogs rendering when provider url is changed.
LB-499: Add provider no action

Fix subscribed blogs lookup.
LB-427 : Add SMS source - Design