PMS template: Accept GTC

Depending on the configuration, authentication at a Public Spot optionally depends upon the acceptance of the general terms and conditions of use (GTC). In some combinations of login options (e.g. via stored reservation data or SMS authentication) the confirmation of the GTC was not clearly structured until now.

As of LCOS version 9.20, the appearance of the login page when using a combination of login methods has been redesigned.