Turn "email server" in groupware settings to link to mail settings
Turn "email server" in groupware settings to link to mail settings

Signed-off-by: Georg Ehrke <3dacbce532ccd48f27fa62e993067b3c35f094f7@georgehrke.com>

andreas-p/nextcloud-server,andreas-p/nextcloud-server,nextcloud/server,nextcloud/server,andreas-p/nextcloud-server,nextcloud/server,nextcloud/server,andreas-p/nextcloud-server,andreas-p/nextcloud-server