This is a maintenance release fixing some bugs and a minor vulnerability affecting the SSO configuration

Changelog:

#19951 - Fix Admin user should not see the author filter in the reports
#19950 - Fix fast subscribe error when admin try to insert a user that has first position in admin users. 
#19919 - Fix coursereport generation
#19900 - move all threads before emoticon select in forum and public_forum 
#19890 - Add tag form scorm items in certificate
#19864 - Remove deprecated constructors - fix show answers of last number_times for ET answer type
#19863 - fix api course add/update/delete day
#19862 - fix sum score in function userScore
#19861 - Filter files in upload question with allowed file formats
#19860 - Invisible fields for SuperAdmins
#19854 - report course dates at 00-00-0000
#19846 - Uppercase first char during users import
#16623 - Risolto Problema con "only update" e "create and update" Fix duplicati
#19843 - fix show correct answer in report when show correct answers is enabled
#19842 - User Object grid - Pagination with many objects
#19814 - Show materials dots on course catalogue even when course is on sale - added in homecatalogue
#19841 - Grade book "Disallowed key characters in global data" on delete
#19840 - User-object grid - link back
#19839 - Incorrect scoring of questions on tests
#19836 - fix Error: API not enabled.
#19827 - Fix DateTime exception in course list when date is not a valid date.
#19807 - Errore caricamento file in domande di un test
#19822 - Show additional fields if admin can edit a user profile
#19816 - Stripslashes in question type upload
#19815 - fix error during import users anche node changes
#19814 - Show materials dots on course catalogue even when course is on sale
#19811 - API not load plugins and events listener
#19809 - Error with quotes in insert and save advice
#19805 - Fix email text on user subscription
#19804 - fix catalogue change and current active tab
#19803 - SSL error during login with chrome
- Fix send email on user update
- fix tinymce