MDL-39761: mod_assign: Always check submission plugin status and visibility.
MDL-39626 theme_formal_white: added color selector to change the overall color of the theme including background images too.
MDL-26998 - mod_wiki: the page_wiki class now stores the course module object.
MDL-39339 - Add test zips for OSX system files and Thumbs.db
MDL-39339 - zip_archive should ignore system files

zip_archive should ignore OSX system files (__MACOSX, .DS_Store) and
Windows thumbnail cache files (Thumbs.db), to avoid issues and confusion.
MDL-33562 lib: remove private keys when user deleted
MDL-33562 lib: remove deleted user tokens
MDL-33105 flexible apply_units() function

Allow use of thousands separator as long as the decimal separator
is used in the number.
MDL-31680 Correcting the format of calculated types correct response
MDL-40110 behat: AM/PM strings are OS-dependant, removing this part from tests
MDL-39825 badges: Remove badges from course navigation when course badges are disabled
MDL-40109 format_weeks: Removing extra space
MDL-40095 SCORM: Fixed DML error when saving with completion options locked

Regression caused by MDL-38315.
MDL-40095 SCORM: Trivial comments tidy up
MDL-39863 Administration: Show confirmation/notice and don't redirect automatically
MDL-16982 Administration: Adding data mapping for custom user fields
MDL-16982 Administration: Cleaned whitespaces and alignment in orignal patch
MDL-16982 Administration: Integrated Inaki's suggestions
MDL-39949 - Blocks - preventing blocks with empty titles from blocking the execution of javascript
MDL-39474 Library: Make a fast way to check developer debug mode