Merge pull request #55 from maxirosson/dev

Dev
Merge pull request #56 from maxirosson/dev

Improved separator/section view
Avoid duplicated GCM notifications
Merge pull request #57 from maxirosson/gcmMessage

Avoid duplicated GCM notifications
Coverflow fixes
Upgraded actionbar sherlock to 4.3.1
Some names refactors
Changed logs to LoggerUtils