MDL-44953 theme_more: Removing odd-looking text-shadow
MDL-37838 block_courseoverview: fix pluaralisation logic

Note that this kind of handling of plurals is extremely limited, see:

https://moodle.org/mod/forum/discuss.php?d=85897
http://search.cpan.org/~petdance/Locale-Maketext-1.12/lib/Locale/Maketext/TPJ13.pod

However, this is a simple fix to the existing logic
MDL-45476 Quiz: Fixing atto on multiple choice pages
MDL-45512 comments: Added full date to comment details.
MDL-45543 availability: Use correct namespace for global classes
MDL-45477 Behat: List of steps takes too long to load, times out

Increase time limit to 300 seconds (5 minutes).
MDL-45550 Conditional availability: Missing lang string for save settings error
MDL-45535 CSS chunking breaks media rules if CSS invalid (IE)

Invalid CSS with extra } symbols, which previously (by fluke)
worked, was broken by recent chunking improvements. This change
makes the chunking code robust against this (stupid) situation.
MDL-45479 atto_image: Improve the preview area

This changes the preview area:
* to show the image at the requested size; and
* to fix the scaling issues.
MDL-44323 admin: use correct css class for warning

The notifyproblem notification is consistent with the rest of
the warnings we report.
MDL-45501 availability: Add uninstall support for conditional plugins
MDL-45323 grade: Fix query errors on grade_get_grade_for_activity method.
MDL-45323 grade: Unit test for grade_get_grade_items_for_activity()
MDL-45571 events: included enrolment method in the 'user_enrolment_created' event description
MDL-45583 badges: check parent contexts consistantly when checking required role.
MDL-44333 quiz reports: use consitent name for user pref

The Marks for each question setting was not being saved properly as a
user preference.
MDL-45603 cache Fix the mappingsonly option to work as advertised.
MDL-44711 navigation: better handling of course expansion exception
MDL-44974 admin: repositioned call to initialise renderer
MDL-45605 Phpunit: Do not call gc_collect_cycles as part of reset.

This takes 25% of the time in running tests and there is no benefit. The
behaviour of destructors is the same before/after the patch.