- Change config key name so default downloads to folder 'Download'
- Always use getFile as we do not need existing file deleted
- Fallback to use File based I/O pre API 29 as officially MediaStore
APIs do not support general purpose usage. And also, it was working
fine on all devices before. If it ain't broke, don't fix it
- Show full download path in settings to make it more clear to the user
- Close streams after using them
