MDL-46737 SCORM: correct dml syntax.
MDL-46619 Forum: author showing in Q and A forum
MDL-46639 mod_scorm: Fix load of simple AICC content

Thanks to Ian Wild for the report and suggested patch.
MDL-39233 mod_url: fix php notice
MDL-39233 mod_url: added unittest for get_course_content
MDL-46911 Database activity: jump to correct place in list after (un)approve
MDL-46961 SCORM: JavaScript Hoisting issue.
MDL-46539 assign calendar: Fix lastcron value for assign cron
MDL-43639: Prevent user updated event on every login

If auth plugin prevents local passwords, then user
is updated and event is triggered on every login.
MDL-45952 feedback: non-respondents in groupings

Fixes feedback non-respondents list to show only members in groups in
the selected grouping if "Available for group members only" is selected.
MDL-46633 chat: Chat send button gets stuck
MDL-46979 backup: remove duplicate string.

Thanks to Matt Sammarco for spotting this.
MDL-45909 install/css: Left align input form fields on Install pages,in RTL mode
MDL-46861 added missing required field areaname
MDL-46902 core_course: display meaningful message when no courses found
MDL-45818 core_message: use system context if user no longer exists
MDL-39840 environment: add support for environment.xml in plugins

New features:

* environment.xml files in all types of plugins
* support for plugin strings via new optional plugin attribute in FEEDBACK
* support for class_name::method_name custom callbacks and classloader
MDL-46985 Added 7-Zip and RAR MIME types.
MDL-46670 report_participation: Look for records in legacy and current

Priority log store will have current information, so
make sure to get information and aggregate that with
legacy data
MDL-37312 backup: Keep course idnumber on same site course restore

When the course idnumber is set during a same site course restore,
retain the course idnumber if there are no duplicates.