Hide password asking during the account creation process

Align with other platform.
During creation account process, Don't ask for a password.
Put a selector "Encrypt local account" - NO by default
If user select yes, ask for password.

changed due date to September 30, 2020

added 1 deleted label

I close as a duplicate of https://git.jami.net/savoirfairelinux/ring-client-gnome/issues/1197

closed

added typefeature request label