Merge branch 'release/0.7' into develop
Add license - Apache v2 it is
Log new highscore remotely and check if persistence works
Ignore keys
Update actions with more appropriate icons
Add restart action
Migrate action handling over to Fragment
Add action to do a random move (because you are too lazy to swipe)
Fix restart to really reset the system completely
Make sure the movement hint is silenced after user proved he/she understood it
Bump version to 0.8 for release
Merge branch 'release/0.8'