MDL-43390 files: Only lock when locking is not prevented
Automatically generated installer lang files
Automatically generated installer lang files
MDL-46206 Accessibility: Remove alt attribute for footer image
MDL-46017 Assign: Fix restore of marking workflow data
Automatically generated installer lang files
MDL-45715 assign: disable marking allocation if markingworkflow is not set.
Merge branch 'MDL-46017-27' of git://github.com/damyon/moodle into MOODLE_27_STABLE
Revert "Merge branch 'MDL-45594_m27' of git://github.com/markn86/moodle into MOODLE_27_STABLE"

This reverts commit 0cc8a0b4b2150c9dca42a542dc783e2a7517208c, reversing
changes made to 6d32f6300e61072e11ad55dc68f7df29be921d1b.
MDL-46433 blog: fix error message when creating an external blog
Automatically generated installer lang files
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-46503 behat: cohort generator allows to create cohort in category
MDL-46017 Assign: Restore can't rely allocated marker fields existing in backup
MDL-46504 libraries: Fixing typo
MDL-46506 Assign: fix php warning on grant extension page

This code was missed when the extensionduedate was moved to the userflags table.
Merge branch 'install_27_STABLE' of https://git.in.moodle.com/amosbot/moodle-install into MOODLE_27_STABLE
weekly release 2.7.1+