MDL-44507 filemanger: fix coding style
Merge branch 'MDL-39759_http_response_code_master' of https://github.com/dongsheng/moodle
Merge branch 'MDL-31679' of git://github.com/aolley/moodle

Conflicts:
	theme/bootstrapbase/style/moodle.css
Merge branch 'mdl44669-master' of https://github.com/tlock/moodle
Merge branch 'MDL-41123-master' of git://github.com/ankitagarwal/moodle
MDL-44268 assign: add 'not submitted' and 'no marker' filter options
MDL-44268 Assign: Improve the "not submitted" filter
MDL-44268 Assign: Fix behat test for assigned marker filter
MDL-44070 availability: corrected SQL to be mysql-compatible
MDL-44844 core: Fix custom menu navigation

Atto introduced a rule to hide all Nodes with the yui3-menu-hidden class
but this rule is too general and applies to non-atto content too.

As a result, when loading the menu and during the XY calculation, the
native Element.getBoundingClientRect() function was returning a bounding
box size of 0 because the Node was not visible and the node was being
hidden from view when it was later made visible.
MDL-42195 Bootstrap: Make selector for responsive images 100% the same as bootstrap3.
MDL-45010 mod_chat: Use H3 instead of H2 in recent activity info
MDL-44760 editor_atto: Address issues with focus when closing menus

Safari fires it's events in a slightly different order for the focusoutside
event which causes the focusAfterHide to be called *after* we change focus.

As a result, we must keep track of the menus which are currently open and
remove their focusAfterHide.
MDL-40843 chat: fixed bug in SQL query in recent activity block
Merge branch 'MDL-42195-master-fix2' of https://github.com/damyon/moodle
MDL-42462 mod_feedback: added $OUTPUT to list of global variables used to avoid error
Merge branch 'wip-MDL-40843-fix' of git://github.com/marinaglancy/moodle
MDL-44619 behat: Helper to init contexts outside behat
MDL-43856 MathJax: Delay setting of lang until after MathJax startup
Merge branch 'MDL-43856-master-fix1' of https://github.com/damyon/moodle