MDL-37646 Assign: Quickgrading fix when using grading filters or lots of students.
MDL-25853 calendar: Fixed broken previous/next links
MDL-37785 theme_base: remove duplicate .dir-rtl file-picker css rules from styke/core.css
MDL-37775 theme_canvas: Changed ADD a block from center align to left in style/blocks.css
MDL-37781 Check for switching the workshop phase without waiting for cron

Now we are checking for the need to switch the phase when the main
view.php is displayed to any user (previously this was done via cron
only). To give our subplugins (such as the scheduled allocation method)
a chance to do what they need to do, the workshop_viewed event is
triggered before the phase is actually switched.
MDL-37781 Allocate workshop submissions without waiting for cron

Now we are checking for the need to execute the allocator every time the
main view.php is displayed to any user. Previously this was done by cron
only.
MDL-37746 qtype_shortanser: avoid normalizer_normalize dangers.

When an error occurs, normalizer_normalize just silently returns null,
which is dangerous. Here, we wrap it in a safe helper function.
MDL-32076 core_grade: fixed ajax handling of unlimited grades and added some unit tests
MDL-37357 core_grade: fixed the showing and hiding of rank on the overview report
MDL-37635 Assign: Prevent errors when viewing a feedback when there is no grade_item in the gradebook
MDL-37566 AJAX Only set max-height for chooser dialogues

If we set height as well as max-height then there is a potential for
whitespace to be shown at the bottom of the list of choices.

This commit stops removing the height option so that we only rely upon
max-height for dialogue heigh calculation.
MDL-37574 Remove default link title from navigation items
Merge branch 'MDL-25853-23' of git://github.com/FMCorz/moodle into MOODLE_23_STABLE
Merge branch 'MDL-37746_23' of git://github.com/timhunt/moodle into MOODLE_23_STABLE
Merge branch 'MDL-37635-23' of git://github.com/damyon/moodle into MOODLE_23_STABLE
Merge branch 'MDL-37646-23' of git://github.com/damyon/moodle into MOODLE_23_STABLE
MDL-30144 Assignment 2.2: Download all as zip should only contain submission from active enroled users
Merge branch 'MDL-32076_unlimited2_23' of git://github.com/andyjdavis/moodle into MOODLE_23_STABLE
Revert "MDL-32076 core_grade: fixed ajax handling of unlimited grades and added some unit tests"

This reverts commit f5eaec86468229cc305723bf5f352284e03c3a0a.
Merge branch 'MDL-37574-m23' of git://github.com/andrewnicols/moodle into MOODLE_23_STABLE