MDL-45254 atto_equation: Allow insertion of macros at the beginning of words
MDL-44398 tags: Fix incorrect usage of caps
MDL-45258 tags:context object/0 should not be passed to tag_set()
MDL-45292 filepicker: fixed border style

Fixed base style issues on RTL.
MDL-45273 quiz: move admin settings into classes folder.
MDL-45273 remove the need for quiz settings.php to include locallib.php.
MDL-45273 only create the quiz settings if necessary.
MDL-45273 quiz: Fix codechecker issues.
MDL-45283 restore: Prevent failure when user course grade exists

When we restore a course, the grade that a user has for the
grade item of the course cannot be created twice. If we try
to create it when it already exists, a database exception is
raised because of index duplication.

The safest way to proceed is certainly to ignore the grade
information from the backup, otherwise we could potentially
overwrite existing information. Though, this only applies
to restore as merge, and it does not affect the update of
the course grade.
MDL-45343 report_log: Fix missing enddate clause when using date filter
MDL-43570 filetypes: Added new filetypes - ddoc, bdoc, cdoc
MDL-45360 report_eventlist: Fixed up css for the Events list detail page.

When the screen size is reduced the details are moved underneath the headings
prematurely.
MDL-44867 atto_equation: Adjust the help string describing cursor info
Merge branch 'MDL-44867-m2' of git://github.com/andrewnicols/moodle
Merge branch 'MDL-45283-master' of git://github.com/FMCorz/moodle
MDL-45167 install: Improve styling of installation process
MDL-45348 report_eventlist: Removed duplicate list link in plugins > report.

I also fixed up a spelling mistake in the language pack (relatedobservers).
Merge branch 'wip-MDL-45348-master' of git://github.com/abgreeve/moodle
Merge branch 'MDL-45167-master' of git://github.com/andrewnicols/moodle
MDL-45329 admin_task: Allow scheduled task change prevention

Some hosting providers have a requirement to prevent users making
modifications to the configuration of scheduled tasks as doing so may have
a negative impact not only on their own site, but also on the performance
of other sites (depending on host configuration). For example, if the
statistics or automated backup tasks were run every minute, this could have
a negative impact for other users).