MDL-41446 Completion: Incorrectly marks complete when grade data present with no actual grade
MDL-43026 behat: Add tests for all existing module generators
MDL-42904 self_enrol: Set customint1 if it's null
MDL-43020: Lesson using a scale always gives the minimum scale value
MDL-43020: Fix calculation of lesson scale value warning
MDL-43020: Fix lesson scale warnings when deleting user attempts
MDL-33971: When viewing course log entries for Quiz View Summary a number is displayed not the quiz name
MDL-42885 tool_uploaduser: removed misleading debugging message
MDL-43048 block_tags: Initalised content->text for tags block
MDL-43079 quiz statistics : fix stats graph when all grades zero
MDL-43068 course&gradebook: show/hide cm & CONTROLS_GRADE_VISIBILITY

Making a quiz visible on the course page, of via the settings form,
could cause the grade item to become visible in the gradebook, even
though the quiz supports FEATURE_CONTROLS_GRADE_VISIBILITY to ensure
that when the grades are hidden in the quiz settings, they do not appear
in the gradebook.

Now, if a module supports FEATURE_CONTROLS_GRADE_VISIBILITY, then
set_coursemodule_visible calls the _grade_item_update callback to update
the grade item(s).

In addition, there was a bug when saving the quiz form, where it used
the value of $cm->visible from the database, which was wrong if the
value of cm->visible had just been changed on the setting form.
MDL-43142 mnet: fixed typo in variable passed to get_string
MDL-43140 mnet: display header after redirects to avoid warning
MDL-43039 Libraries "The session partition is full." false positive.
MDL-43033 cache: added stats logging to get_many methods
MDL-43033 cache: fixed mode map event invalidation scenario
MDL-43033 cache: added a warning icon for mappings

We now show a warning icon with an explanatory alt if the user
has mapped a store as a mode default that doesn't not fulfill the
requirements of every known definition.
MDL-43033 cache: fixed display of definition stores in admin interface
MDL-43033 cache: added stats logging to set_many methods
MDL-42731 block_activity_modules: add behat tests