MDL-47612 gradereport_grader: Remove max-width for RTL

For some reason, Safari behaves incorrectly when dealing with RTL
content where the table has a max-width of 100%.
MDL-29873 Lesson: Essays not shown on grade page with SQL server
MDL-47755 badges: Fix internal message output

Signed-off-by: Yuliya Bozhko <yuliya.bozhko@totaralms.com>
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-47790 core_outputcomponents: added one more <tr> around <td clspan="xx"> when $table->data[] = "hr" is provided
MDL-47227 admin: Fix user bulk selection over 1000
MDL-40949 admin: Fix $CFG->preventexecpath hints

This setting restricts all local paths, not just
executables.
MDL-46517 calendar: adjust dates for DST

Change-Id: I269382031e4ffa714396f3d9ce2315a5c96d929c
MDL-46517 calendar: adjust display for DST

Thanks to Jo Matthews for providing a patch
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.
Merge branch 'wip-MDL-46517-m26' of git://github.com/marinaglancy/moodle into MOODLE_26_STABLE
MDL-33939 gradingform_guide: use correct max grade for scales.
MDL-47796 mod_data: Fix display of group records.

When viewing entries as a teacher in separate group
mode, changing the group would result in random
entries being shown.
Merge branch 'MDL-47227_MOODLE_26_STABLE' of https://github.com/crazyserver/moodle into MOODLE_26_STABLE
Merge branch 'MDL-47612-26' of git://github.com/andrewnicols/moodle into MOODLE_26_STABLE
Merge branch 'wip-MDL-47796-26' of git://github.com/abgreeve/moodle into MOODLE_26_STABLE
Merge branch 'MDL-47755_26' of https://github.com/totara/openbadges into MOODLE_26_STABLE
MDL-46219 assignment: delete files when resetting assign activities
Merge branch 'MDL-47790-26' of git://github.com/jethac/moodle into MOODLE_26_STABLE
Merge branch 'wip-MDL-47647-26' of git://github.com/abgreeve/moodle into MOODLE_26_STABLE