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
LB-542: Embed URL can't be opened in IE8 and IE9

Fixed with a polyfill. From what I was the problem was just in IE8
Merge pull request #29 from vladnicoara/liveblog-13-ie

LB-542: Embed URL can't be opened in IE8 and IE9
Merge pull request #27 from vladnicoara/stt-issues

Stt issues
LB-508 : Autopublish - chaining blogs plugin
LB-460 : "Image Upload" won't clean the last uploaed one

x
LB-515 : avatar images are not being added to Users profile

x
LB-515 : avatar images are not being added to Users profile
LB-515 : avatar images are not being added to Users profile

remade pass check
LB-527 : Image type of posts -> images from Media Archive gallery can't be added

sync metadata before registering
LB-498 : Adding post -> it is very hard to select "image" and "link" type of posts

fixed
LB-515 : avatar images are not being added to Users profile

remade again pass check based on suggestion
LB-515 : avatar images are not being added to Users profile

remade again pass check based on suggestion
LB-539 : Collaborator user is able to add Google, Instagram, YouTube, etc. feeds, yet hitting "Configure Blog" requires relogin

added ISourceService to allGet on every right type
don't know if it's the correct logic, quickfix atm