Free cultbooking software for linux

Cultbooking project is a hotel booking system.
Via a central API called CultSwitch, it is possible to make bookings and set the actual availabilities in the hotels PMS.
Enhancements:
- added session function to avoid reduplicate reservations
- added a new table errortext into the database ota_object_description and changed the scripts cancel.php and confirm.php to support for displaying the contents of errors
- modified the function send_xml_data in the file cb_funtionen_inc.php to connect with the new Cultswitch, the central API, which is now implemented in Java.
- added a function in Javascript to check the consistency between the numbe of the guests and the occupancy of the room(s).
- the detailed information of the hotel including the description of hotel or room can be displayed not only in English but also in German.