Allow people to be automatically added to scheduled meals in a certain office

[leo-bogastry]

Each user has a profile where they can set a preferred office location.
We can use this information to automatically enrol a user to the meals scheduled to that location.
The user needs to give permission to this.
For it to work properly a synchronization with vacation.lunatech.nl should be done, to not add an user to a schedule if the user is on vacation. There are several different vacation.lunatech. websites and I have no idea how this info/api is available. For the domains being handles by the lunatech-chef check application.conf.