v1.0.0

v0.23b

set parentActivityName of SettingsActivity

Merge pull request #1 from hmueller01/homeoffice

Added home office button and database flag

- Updated targetSdkVersion to 31 (Android 12)

- Updated targetSdkVersion to 30 (Android 11)

ignore .DS_Store files

Added current time display (including seconds),

Added release signing config,
Updated targetSdkVersion to 28 (Android 9 / PIE)

merge with oreo-fixes

Fixed some (not all) warnings by Android Studio