Merge pull request #92 from maxirosson/dev

Dev
Facebook login refactor
Merge pull request #93 from maxirosson/dev

Added Facebook friends and invite interfaces on the server
Facebook login refactor
Added facebook friends grid fragment
Create friend request from facebook friends
Merge branch 'facebook' of github.com:maxirosson/media-fever into facebook

Conflicts:
	media-fever-android/res/layout/social_settings_fragment.xml
	media-fever-android/src/main/java/com/mediafever/android/ui/settings/SocialSettingsHelperFragment.java
	media-fever-android/src/main/java/com/mediafever/usecase/settings/MediaFeverFacebookLoginUseCase.java
Merge
Invite user to install this app android logic
Facebook friends android logic for handsets
Facebook friends improvements
Removed not used facebook code
Facebook integration improvements
Changed target version to 4.3. Facebook improvements
Added facebook login detection. Added facebook logout when the user log out from media fever. Compilation fixes
Merge pull request #94 from maxirosson/facebook

Facebook
Alert dialog fragment improvement. Added mockey tool