MDL-38545 Reports: PHP Strict Standards error in graph.php
MDL-39166 auth_ldap Add triggers for user created/updated events.
MDL-39409 auth/cas pass web proxy settings along to phpCAS
MDL-39487 mod/assign: fixed ID number of grade item changing
MDL-39827 course: Trigger invalidate cache event while changing sort-order of category
MDL-39723 Remove unnecessary queries for COURSE, SITE
MDL-39821 assign: missing setType with advanced grading
MDL-39743 assign: Fix missing capability check for "grant extension"
MDL-39870 correctly determine whether activity is resource or module
MDL-39317 assign: Fix for submitted filter on grading table.

Some old upgraded assignments have no timecreated column so use
a different one to check for a valid submission.
MDL-39936 upgrade: 2.5.0 line incorrectly positioned
MDL-39931 theme_bootstrapbase: ported invisiblefieldset css rules from theme/base/core.css to less/moodle/core.css
MDL-34085 Fix the backup options names in core_course_duplicate_course

Fix the option names to match those used by the backup subsystem.
MDL-39945 qtype multichoice was not comparing blank responses correctly.
MDL-39939 Fix the basic SCORM report plugin name
MDL-39932 mod_feedback - Mapping Feedback when Course is Deleted - thx to David N. Johnson
Automatically generated installer lang files
MDL-39801 navigation_node::remove fails if first child does not have a key
MDL-39801 navigation_node::remove does not allow to insert nodes afterwards
MDL-21097 Correctly check capabilities for course settings items

- Make sure that items in course settings (and frontpage settings) are shown depending on user capabilities
- Make sure user is able to turn editing on on the page even if he has only limited number of seciton/modules managing capabilities