Event Booking Release - V5.0.7 Retail

[duckietm]

This is a maintenance release. On this version, we focus converting some system plugins in the extensions to Joomla Scheduled Tasks. During the update process, the system will uninstall these converted plugins, and create necessary scheduled tasks automatically to replace these plugins, so you just need to update and do not have to do anything. Expect some performance improvements with these changes.