Missed Notifications Reminder

Aug 8, 2021

Added possibility to contribute into development
Added possibility to rate app
Minor appearance changes
Enabled "Foreground service" option by default
Updated icon graphics (thanks to Olaf Kuba)
Various potential crash fixes
Added German translation. Thanks to Olaf Kuba
Fix DND mode changes detection
Fix reminder is not rescheduled if it is skipped because of screen is on or phone call is active