- when no pin is set, user will always be brought to pin setter in app
- when no pin is set, user does not need to enter pin to enter app

Some fly-by's:
- when device boots, "Some files are unlocked" notification will show if necessary
- app icon is now set to the vault icon, for now.
Ran formatter where required
Merge branch 'master' of https://github.com/AlexKolpa/AndroidStealth into 141-164-first-launch

Conflicts:
	AndroidStealth/src/main/java/spikes/stealthdialer/StealthDialReceiver.java
Fixed imports and compile errors for merge
Merge pull request #165 from AlexKolpa/141-164-first-launch

First launch: pin set & notifications on boot