MDL-46370 Ajax and Javascript - Fixes docked blocks not expanding when using dock on right
MDL-45594 simplify message_get_recent_conversations SQL

I am pretty sure that this new SQL is logically equivalent to
the original, and it passes Mark's unit tests. However, it is
hard to be 100% sure.
MDL-45594 core_message: ordered recent notifications by timecreated
MDL-45594 core_message: added unit tests
MDL-46335 backup: fixed casting issue with setting labels

The issue was that clean_param took an int and returned a string
and the result was used in an exact comparison.
The type change mean the comparison failed.
The solution was to ensure the param was cast as a string.
MDL-34248 core_backup: added missing end quotation
MDL-34248 core_backup: used API instead of inserting into the log table directly
MDL-45724 cache: admin screen now shows store warnings

Implemented a means by which cache store instance can communicate
warnings due to things such as conflicting configurations etc.
MDL-45724 cache: added cache API warnings to the admin notifications page
MDL-43063 core: fix phpdoc comment codechecker issue.
Merge branch 'MDL-46370_26' of https://github.com/moodlerooms/moodle into MOODLE_26_STABLE
Merge branch '46335-26' of git://github.com/samhemelryk/moodle into MOODLE_26_STABLE
Merge branch 'MDL-43063-26' of git://github.com/lameze/moodle into MOODLE_26_STABLE
Merge branch 'MDL-45594_m26' of git://github.com/markn86/moodle into MOODLE_26_STABLE
Merge branch '45724-26' of git://github.com/samhemelryk/moodle into MOODLE_26_STABLE
Merge branch 'MDL-34248_m26' of https://github.com/markn86/moodle into MOODLE_26_STABLE
Merge branch 'MDL-37509-26' of git://github.com/damyon/moodle into MOODLE_26_STABLE
MDL-45724 cache: fixed warning structure bug
MDL-37509 Assign: Do not put description in calendar before it should be shown to students