Added Dlabs icon
Made ApkInfoObserver inner class of MainPresenterImpl
Changed gradle minSdkVersion to 16 (due to some notification stuff)
Added notification informing of apks
Create separate notifications for each branch
Added "feature" branch to relevant branches for debugging purposes
Added service/observable/observer for downloading a (hard-coded) bucket apk
Renamed a few variables
Simplified file saving code and made notification intent try to install