NOBUG: Bump backup version for 2.4
MDL-29805 add REQUIRE_CORRECT_ACCESS define + return error code when AJAX_SCRIPT fails
MDL-36110 - Blocks - Community finder icon alt attribute is now empty
MDL-36960 - fix broken horizontal positioning of titles for docked blocks
MDL-35979 - Commenting - Adding an empty alt attribute to the javascript generated delete icon for comments
MDL-36840 Set course.format to 'site' for site-course
MDL-36943 Do not notify about already installed updates

Before this patch, the available_update_checker::cron_notifications()
method accessed the availableupdates property. But for plugins, that property
basically contains the most recent version available. So we were missing
the check against the actual version installed.

The fix was simple - obtain available updates via the available_updates()
method that performs the check.
MDL-37003 Fix repeated line in update notification email

There was a problem experienced after 2.4.0 release because the version
of the 2.4.0 release was the same as 2.5dev release. So the version
value matched twice in the loop and the line was repeated in the email.
MDL-36341 calendar: fixed JS bug with popup node setter
MDL-36963 Improve mdeploy worker::move_directory() method

The additional parameter allows to use this method without actual
removing the root of the source location. That is, it is now possible to
move the content of a folder only.

Also, a small refactoring happened here as we will need a variant of
this method that does not throw exception if the target already exists.
MDL-36963 Improve mdeploy worker::remove_directory() method

The additional parameter allows to use this method without actual
removing the root of the path. That is, it is now possible to remove
the content of a folder only.
MDL-36963 Add unit tests for directory operations in mdeploy.php
MDL-36963 Do not attempt to remove the root folder of a plugin during the update deployment

There is no need to move the root folder of a plugin during the update
deployment. We just need to operate with its contents. So the web server
process can have the write access for the plugin folder only.
Merge branch 'MDL-36963-deployment-backup_24' of git://github.com/mudrd8mz/moodle into MOODLE_24_STABLE
MDL-37026 - lib: The function user_can_assign() returns true for admins.
Merge branch 'wip-MDL-36960-m24' of git://github.com/amygroshek/moodle into MOODLE_24_STABLE
MDL-36731 fix E_STRICt issue when creating new groups in user upload
MDL-36983 fix incorrect test method name

Credit goes to David Scotson, thanks.
MDL-36938 cache: test performance script checks requirements now
MDL-36939 cache: instance form validation now handles errors properly