FAUbox

Invalid date

- Show sync icons on files (like on iOS App)
- Add floating action button and move actions into it
- Replace context menu icon and add sharing icon
- Provide "Save" for files to store in Android files or gallery
- Provide "Open" system editor option for documents
- Remove favourites
- App no longer looses access to data on sharing with share extension
- Support landscape view
- Fix formatting of timestamp for files