add attribute opentimes to BasicInformation.StationInfo.Contacts to API
opentimes for studio and office is missing
not sure if actual system under contact at all represents free radios: contact is pointing to team, which seems to be personal information of editorial staff or a certain team. but most radios have unpersonal tasks-triggered contacts and it is not sure that always the same person is on duty - f. e. fone numbers for studio and office are not belonging to a team or a person.