Booking Appointments in other locations

[luxigo]

Hello Sergey,

You've handled the complexity nicely for this app.

It was not as easy as it seemed to dig into it: with no debugger handy, logger->error(json_encode()) was my only friend in the nextcloud_aio_nextcloud container... :-)

For appointments in other locations, add a textarea in the extra fields with the "data-is_location" attribute set:

  {
    "tag": "textarea",
    "required": true,
    "label": "Location",
    "data-is_location": true
  },

I guess there is some work left for other use cases, but it seems it kinda fix #606 for me right now.

Regards,

Luc Deschenaux