v1.2.0

Changes
- Moved 'add medication' functionality to a floating action button
- Updated German translations by jpameli on GitHub
- Adjusted margins to make layouts look nicer
- Updated Brazilian Portuguese translations by mezysinc on GitHub
- Changed default launcher label to abbreviation "DITMM?"

Addition
- Added database backup and restore
- Added notification action to take medication
- Added notification action to resend a notification in 15 minutes

Fixes
- Fix crashes caused by clicking on a notification for a deleted medication
