fixed calling BAO from API
fixed creating activity function and use civicrm_api3() instead of civicrm_api()
fixed params when creating APIs
use civicrm_api3 instead of civicrm_api and caching error on APIs
Updated constants
Added BookingPayment API
fixed DOM when setting default date and time on sub resource dialog
re-format uninstallation script
Added test classes for testing API - TODO:://Implement test case
re organised Upgrader.php