[bug] Wi-Fi password

[gbcreation]

Thank you for this awesome app. It's the only app I used from F-Droid that recognizes that a QR code is a Wi-Fi network and offers to register it on the device.

I found two bugs:

• if the Wi-Fi password contains a ; character, the extracted password is truncated and contains only characters before this ; character. For example, if the password is abc;def, the extracted password is abc.
• if the password contains \ characters, they are all removed. For example, if the password is a\b\c, the extracted password is abc.