Fixing an issue with not sending the launch_presentation_return_url
MDL-34800 core_grade:switched from hiding the submit button to disabling it if ajax is enabled
MDL-35622 files: Add support for SMART Notebook MIME types

- The MIME type for Notebook files is: application/x-smarttech-notebook
- The MIME type for Gallery files is also: application/x-smarttech-notebook
Refs: http://exchange-forum.smarttech.com/forums/p/5152/11945.aspx#11945

Original author: Matteo Scaramuccia <moodle@matteoscaramuccia.com>
Fixed by: Paul Holden <pholden@greenhead.ac.uk>
MDL-29938 get_users - search users external function
MDL-29938 don't validate return user info against PARAM_USERNAME as PARAM_USERNAME only apply to manual authentication (and web service)
MDL-29938 Fix typo bypassing some code + remove misplaced code in deprecated function + some code cleaning
MDL-29938 ignore invalid keys
MDL-37687 use $SITE to allow non-logged-in users to browse comment via ajax
MDL-37997 Improve the display of MUC caches used in the footer

Cache stores with no hits and some misses are highlighted in red. Caches
stores with some hits but more misses are highlighted in yellow.
Otherwise (more hits than misses) the stores are highlighted in green.
MDL-32620: Fixing up white space in comment
MDL-37934 Blackboard_six question import fails in some cases
Import fails if the same image is used several times
in the same field of the same question
MDL-37982 enrol_ims: No filters applied when inserting into DB
MDL-38009 behat: Reset cachedir and tempdir
MDL-38029 behat: Cleaning caches before each test
MDL-33774 mod_label stores the content where it is supposed to

removed hardcoded checking for 'label' module type

changed label update script
MDL-33774 instead of checking that activity is label we check that it has view url
MDL-33774 filter_activitynames removed hardcoded label module type
MDL-33774 Reset filters caches between unit tests
MDL-38033 dndupload - ignore case when comparing dropped file extensions with those supported by activity modules
MDL-37449 Incorrect doubled 'u.email' field in the SQL query (Oracle error: ORA-00918)