Fix 'remember password' toggle
#383 mentions an issue with the remember password feature.
Credential savings works on (my) openSUSE Tumbleweed upon click on the key icon in the URI when logged in - the credential popover appears and allows to save password.
However, it's true that the 'remember password' toggle in dialog settings is not taken into account nor the setting value.
I'm not sure of what that setting means, I went with: When enabled then allow credential saving via the credential popover; When disabled then disallow saving.