from https://otrs.wikimedia.de/otrs/index.pl?Action=AgentTicketZoom;TicketID=754407: * Team field should be longer * translation in english * add title to mail for CENTRAL see https://otrs.wikimedia.de/otrs/index.pl?Action=AgentTicketZoom;TicketID=730829#836131 minor stuff: * remove dot before "Nextcloud" at login page. * add Testmode warning at login screen