QR code screen redesign

Hope everyone is doing well!
I have some final updates on this issue:

  1. QRScannerFragment. As per @seadowg suggestion, it is the first fragment. The main menu Configure via QR Code item also redirects the user to this screen now.
  2. ShowQRCodeFragment. The warning text is absent when admin password/server password are not set.
  3. ShowQRCodeFragment. Warning text when admin/server password are not included in QRCode. This is the warning text when no passwords are in the qr code. For example: if admin_pw.isEmpty() and !server_pw.isEmpty(), if the user removes the server_pw, then this warning text will display. If !admin_pw.isEmpty() and is also removed, this same warning text will be displayed.
  4. ShowQRCodeFragment. admin_pw.isEmpty() and !server_pw.isEmpty(), checkBox for admin_pw is disabled because admin password is not set.

Critical feedback appreciated!