Add hook to set paid registration
Registrant API access permissions
ix Checkin HTTP API return variable
Fix attach room when no PIN set
Fix bad name class registrant api
SetPaid API return values renamed
Documentation for Registration HTTP API
Added registrant auth key to qrcode
Removed auth_key parameter from RegForm API
Adjusted start date for Alarm email
Fixed error in registration form mail sending

Sending a mail with an attached ticket when registrant notification is off
Improved messages when RAVEM API fails
Refactor room occupation code and add util script

...to get the month/year occupation records for all rooms
s/occupation/occupancy/
Remove accidentally-committed debug code
Improve room occupancy script

- Sort results
- Only show active rooms
- Allow filtering by location
Update robots.txt (new URLs)
Fix material icon for excel files
Send office files with attachment disposition

fixes #1519
Fix wording in ResponseUtil exceptions