MDL-47097 theme: Fixed issue with dd's sliding up
MDL-47033 general: Fix incorrect use of 'course' layout

It should use 'incourse' layout in most cases

Signed-off-by: Yuliya Bozhko <yuliya.bozhko@totaralms.com>
MDL-47170 tiny_mce: Fixed display of bullets in rtl languages
MDL-46652 custom_menu: fix for multi-language support breaks menu nesting

Fixed bug by building full menu structure, then removing hidden menu items and all associated children.
Refactored custom_menu_item class and convert_text_to_menu_nodes() to improve maintenance.
MDL-46920 theme_bootstrapbase: fix dropdown to use data-target
MDL-47358 gradereport_history: Display history even when there is no grader recorded
MDL-47252 mod_forum: Ensure guest users can't subscribe to discussions
MDL-39190 Javascript: Pop-up calendar days of week wrong

The YUI2 calendar widget (still used via 2in3) uses midnight as the time
component of its Date objects, which triggers a Safari bug resulting in
11pm Saturday being returned instead of midnight Sunday when subtracting
days to get the last few days of the previous month.  This shows up ONLY
on the month after DST begins, if DST begins on the last Sunday of a given
month (and the Calendar widget is set to Sunday as the first day of the
week).  The fix/workaround of using noon instead of midnight is employed
by YUI3 and others.
MDL-47195 core: Add PSR-0 Autoloader

This issue is a part of the MDL-47194 Task.
This issue is a part of the MDL-39707 Epic.
MDL-47195 libraries: Add horde IMAP from Horde 5.2.1

This issue is a part of the MDL-47194 Task.
This issue is a part of the MDL-39707 Epic.
MDL-46171 Assign: Add "latest" column + index to submission table.
MDL-46171 Assign: Update code so latest field on assign_submission table is always set correctly
MDL-46171 assign: And here is the benefit of the new column - simplify the SQL
MDL-46171 Assign: Always require a submission record if there is a grade

Also - update unit tests to match the new expectations.
MDL-46171 assign: Peer review cleanups

* Remove hardcoded table names
* Remove some code that was left in after debugging
* Add some comments about grades with no submission
* Set submission->latest to 0 on restore (it will get fixed later)
* Changed get_records_sql to get_recordset_sql in restore.
MDL-47358 gradereport_history: Improved default natural sorting by time
MDL-37707 mod_assign: Prevent user from switching to and from team submissions
MDL-47395 added cli_error() visual cue
MDL-47378 mod_assign: prevent debugging notice

Parameters come out of get_user_preferences as strings.
MDL-47300 import latest TCPDF 6.0.093