MDL-40343 forum: indent less when mobile, nested

Changes the indenting of forum replies to be relative to the width of
the parent container, so the indent decreases as threads get nested
deeper. Also reduces the indent size automatically for smaller screen
sizes.
MDL-46219 assignment: delete files when resetting assign activities
MDL-33939 gradingform_guide: use correct max grade for scales.
MDL-36987 auth_manual: fix config for field locking

Thanks to Sergey for the patch
MDL-47755 badges: Fix internal message output

Signed-off-by: Yuliya Bozhko <yuliya.bozhko@totaralms.com>
MDL-47805 tool_monitor: More info in adhoc task
MDL-47703 core_grades: Prevent use of weights with non-aggregated scales
MDL-47703 core_grades: Behat test for (non) aggregated scales
MDL-47647 lib: Fix message unit test failure.

Messaging unit tests on Windows were failing because
of a comparison between two file paths. Part of the
path would have a forward slash instead of a backslash
and so would fail.
MDL-47898 mod_quiz: Correct path when checking content_editable

Addresses a number of issues when using the text editor in a quiz using
secure mode.
Automatically generated installer lang files
MDL-47916 web services: Fixed invalid returned value type
MDL-47850 message_airnotifier: Fixed airnotifier web service url
MDL-47889 tool_monitor: Test handles random DB ordering

On Oracle, the subscriptions are not ordered in the same way
than in other DB engines, so we do not rely on that ordering
any more in the test.
MDL-47227 admin: Fix user bulk selection over 1000
MDL-47877 mod_forum: Correct subscription options for forums

Test was the wrong way around when checking subscription state.
MDL-47919 tool_monitor: adjustments to behat tests
Merge branch 'wip-mdl-47850-m' of git://github.com/rajeshtaneja/moodle
Merge branch 'MDL-47889-master' of git://github.com/FMCorz/moodle
MDL-47368 Edit quiz: page should not reload so often

The approach is that we have a new JavaScript function
M.mod_quiz.resource_toolbox.reorganise_edit_page which, after a ajax
action, fixes up everything like page breaks, page and question numbers,
that might now be wrong.

We call that function instead of reloading the page.

Also, there are a lot more Behat tests to verify this works correctly.

AMOS BEGIN
 MOV [joinpages,mod_quiz],[removepagebreak,mod_quiz]
 MOV [splitpages,mod_quiz],[addpagebreak,mod_quiz]
AMOS END