New maintenance release available for download

Main fixes and changes included in this maintenance release:

#19760 - Fatal error creating LO with customfield
#19705 - Gradebook - Attempts history showing attempts from all users
#19753 - Bug with course availability dates and subscription
#19745 - Typo 1111 in subscription confirm box
#19731 - Root/nodes fields selector
#19781 - SCORM - Improved tracking for LO opening in popup
#16623 - Import Users - Fix issue with "only update" and "create and update" option
#1780 - Certificates - Empty values in classroom course variables
#19761 - Function playFieldForUser not working in customfield lib
#13628 - Catalog - No course visible after login in general catalog
#19794 - Solved - View customfield without label
#19790 - Solved - Conference BBB - wrong videoconference name
#19792 - Solved - Error in report plugin with uppercase name
#19691 - Plugins initialization: changed bootstrap steps to add plugins self named file call in order to allow plugins initialization.
#19754 - Access detail in users/objects for all object types
#10418 - Installer/Upgrader: checkStrictMode, force strict_mode (like), minor changes on install-upgrade
#19797 - Dropdown field in certs list show its ID
Registration form: - Fixed date field behaviour
Events: send email in course user subscription
U/O Grid Fix total time ISO scorm sessions

Plus other minor fixes and improvements