Merge branch 'hotfix/fix_crash_on_delete' into develop
add export data activity.
import/export to json file (user can choose name).
Inject views.
inject click handlers for export activity.
cleanup a bit.
remove/add TODO
fix unclosed DB. Simplify export/import.
add transparent theme to app. change string.
fix backup file type.
add read/write permissions
Merge branch 'feature/export-import' into develop
add betterpickers to project and use them
fix HapticFeedController trying to vibrate when the calling app does not have the permissions.
add dark theme to calendar date picker
fix some formatting and stuff
a bit cleanup
save theme in state. fix color of text.
fix little errors.
use dark theme again.