Merge branch 'dev/p/fp2/fp_apps_bringup' into int/p/fp2
* dev/p/fp2/fp_apps_bringup:
Add Fairphone Launcher to all builds
Add ProgrammableButton to all build variants
Add FairphoneSettings to all build variants
Add ProximitySensorTools to all build variants
Add Fairphone Checkup to all builds
Add the Fairphone Common framework to the build
Assign priv_app domain to Updater
Add the Updater app into all builds
Add initial structure
Issue: FP2P-104
Change-Id: Ibb43df92776bc66e504ac652c5d51e35b83288d8