Convert col-xs-* to just col-* as part of bootstrap v3 -> v4
Convert box-* -> card-* as part of bootstrap v3 -> v4
Moved domain actions on main dashboard to a dropdown menu to avoid clutter
Added "Log Out" to top header left
Hid OTP on admin edit user to only show the disable card & options if the user account has OTP enabled
If the 'otp_force' and 'otp_field_enabled' basic settings are both enabled, automatically enable 2FA for the user after login or signup, if needed, by setting a new OTP secret. Redirect the user to a welcome page for scanning the QR code.
Also show the secret key in ASCII form on the user profile page for easier copying into other applications.