Merge branch 'MDL-67378-master' of git://github.com/rezaies/moodle

Merge branch 'MDL-67376-master' of git://github.com/rezaies/moodle

Merge branch 'MDL-63734-master_hidepassword' of https://github.com/ledship/moodle

Merge branch 'MDL-65948-master' of git://github.com/junpataleta/moodle

Merge branch 'MDL-64764' of git://github.com/paulholden/moodle

Merge branch 'MDL-67449-master' of git://github.com/andrewnicols/moodle

Merge branch 'MDL-67469-master' of git://github.com/junpataleta/moodle

MDL-64764 core_admin: allow to submit empty list of allowed roles.

Co-authored-by: Paul Holden <paulh@moodle.com>

Merge branch 'MDL-65849-master' of git://github.com/rezaies/moodle

Merge branch 'MDL-66938-master' of https://github.com/grabs/moodle

Merge branch 'MDL-58281-file-missing-500' of https://github.com/brendanheywood/moodle

MDL-67114 mod_wiki: Whitespace fix

Merge branch 'MDL-67114' of https://github.com/stronk7/moodle

Merge branch 'MDL-66871-master-v2' of git://github.com/lameze/moodle

Merge branch 'MDL-67138-customlang-failures' of https://github.com/brendanheywood/moodle

Merge branch 'master_MDL-64610' of https://github.com/golenkovm/moodle

MDL-66871 calendar: fix deprecated parameter in the phpDoc

MDL-66871 calendar: add unit test coverage for ics importing

MDL-66871 calendar: fix ics importing logic

Merge branch 'MDL-67336-master' of https://github.com/roland04/moodle

MDL-67449 grunt: Build ignorefiles from component list

MDL-67449 grunt: Refactor CSS generation

MDL-67449 grunt: Refactor gherkinlint

MDL-67449 grunt: Refactor YUI commands

MDL-67449 grunt: Refactor watch to use component list

MDL-67449 grunt: Refactor path calculation for AMD

MDL-66938 mod_feedback: Export includes unwanted html in field names

MDL-67114 core: php74 fix. Fix use of scalar as array in core

There are various places where it's not guaranteed that the
variable being used is array, and instead, can be null, bool, int...

We need to check that because php74 warns about it.

Where possible we have used the coalesce operator as
replacement for isset() ternary operations.

MDL-67114 scssphp: php74 compatibility local fixes

Note they are already available upstream, versions 1.0.4 and up so,
in next upgrade they will be fixed.

MDL-67114 mustache: php74 fix. Fix use of scalar as array

Trying to use values of type null, bool, int, float or resource as an
array (such as $null["key"]) will now generate a notice. This does not
affect array accesses performed by list().

RFC: https://wiki.php.net/rfc/notice-for-non-valid-array-container

weekly release 3.9dev

NOBUG: Fixed file access permissions

Merge branch 'install_master' of https://git.in.moodle.com/amosbot/moodle-install

Automatically generated installer lang files

Merge branch 'MDL-67599-master' of https://github.com/snake/moodle

MDL-67599 behat: fix behat tests assuming Jan 2020 is a future date

MDL-64610 task: Add support for per-task concurrency limits.

Merge branch 'MDL-65835-master' of git://github.com/abgreeve/moodle

MDL-65835 plagiarism: Initial deprecation of old functions.

This is the initial deprecation of:
* plagiarism_save_form_elements
* plagiarism_get_form_elements_module
* plagiarism_plugin::get_form_elements_module
* plagiarism_plugin::save_form_elements

Merge branch 'MDL-67598' of https://github.com/stronk7/moodle

MDL-67138 tool_customlang: Expose errors writing lang files

Automatically generated installer lang files

MDL-67598 unit tests: Pass day of month without leading zero

Note this fixes the unit tests. Still the calendar API itself
should be able to manage this cases, both casting (int) or
being stricter about what's allowed there (param hinting).

But that falls out from this issue and the code that introduced
the failures, so the pure unit-test fix has been applied.

Merge branch 'MDL-67403-x-redirect-by' of https://github.com/brendanheywood/moodle

Merge branch 'MDL-67385-master' of git://github.com/rezaies/moodle

Merge branch 'MDL-67593-master' of https://github.com/snake/moodle

MDL-67593 core_iplookup: update lang string describing download process

Let users know they need to register on maxmind before granted download
access.

Merge branch 'MDL-63996-master' of git://github.com/andrewnicols/moodle

MDL-67593 core_iplookup: use MaxMind test database in unit tests

Instead of downloading a live database (now not available publicly)
use a local test database.

Merge branch 'MDL-67487-master' of git://github.com/lucaboesch/moodle

Merge branch 'MDL-67470-master' of git://github.com/junpataleta/moodle

MDL-67470 theme_boost: settings_menu_proxy correct background

the .region_main_settings_proxy was introduced in MDL-56582 using the
wrong bootstrap variable for the background color

MDL-58281 files: Correctly handle missing files in readfile_accel

MDL-65948 core_grade: Use category names as master checkbox labels

Use the name of the grade categories as label to distinguish master
checkboxes from regular ones.

MDL-65948 core_grade: Use new core/checkbox-toggleall

Merge branch 'MDL-67233-master' of git://github.com/peterRd/moodle

Merge branch 'MDL-67491-master' of git://github.com/junpataleta/moodle

Merge branch 'MDL-67416' of https://github.com/stronk7/moodle

Merge branch 'MDL-67380-master' of git://github.com/aanabit/moodle

Merge branch 'MDL-63650-master' of git://github.com/aanabit/moodle

Merge branch 'master-MDL-67467' of https://github.com/yao9394/moodle

Merge branch 'MDL-67523-master' of git://github.com/marinaglancy/moodle

Merge branch 'MDL-67527-master-enfix' of git://github.com/mudrd8mz/moodle

Merge branch 'MDL-63107-master' of git://github.com/bmbrands/moodle

Merge branch 'MDL-65809-master-travisphpbump' of https://github.com/snake/moodle

MDL-65809 core: travis min php version set to 7.2 to match requirements

Merge branch 'MDL-65809-master' of git://github.com/sarjona/moodle

Merge branch 'MDL-60985-master' of git://github.com/lucaboesch/moodle

Merge branch 'MDL-66999-master' of git://github.com/bmbrands/moodle

MDL-67467 Reports: sortable date format in pregress csv report

date format in csv report should be sortable by date.

Merge branch 'master-MDL-67524' of https://github.com/yao9394/moodle

Merge branch 'MDL-67374-master' of git://github.com/rezaies/moodle

MDL-63734 adminlib: Hide password when defined in config.php

This will hide the password on admin_setting_configpasswordunmask fields when it is already defined in config.php

Merge branch 'MDL-59487' of https://github.com/brendanheywood/moodle

MDL-67524 book: fixing view hidden chapter issue

* Users who has permission should be able to view after turning editing off

Automatically generated installer lang files

MDL-67416 composer: bump to moodle-behat-extension 3.39.1

that version already requires php72. The lock file has been
created using that php72 version.

MDL-67491 core_message: Primary'fy the contact request counts

MDL-60985 tool_usertours: Hide next on last, prev on first and primary.

MDL-67487 forms: align "Custom" checkbox for course section name.

MDL-65809 upgrade: clean < 3.5.0 upgrade steps

This just deletes all the upgrade steps previous to 3.5.0. Some
small adjustments, like tweaking globals can also be applied
when needed.

Also includes an upgrade step to prevent upgrading from any
version < 2018051700 (v3.5.0) as anti-cheating measure.

Previous commits have removed/deprecated all the upgradelib functions
not used anymore in codebase. Deletion has been documented in corresponding
upgrade.txt files:

- upgrade_fix_block_instance_configuration()
- upgrade_theme_is_from_family(), upgrade_find_theme_location()
and linkcoursesectionsupgradescriptwasrun setting
- upgrade_block_positions
- upgrade_fix_config_auth_plugin_names()
 and upgrade_fix_config_auth_plugin_defaults()
- format_xxx_upgrade_remove_numsections(), format_xxx_upgrade_hide_extra_sections()
and format_xxx_upgrade_add_empty_sections()
- filter_mathjaxloader_upgrade_cdn_cloudflare()
and filter_mathjaxloader_upgrade_mathjaxconfig_equal()
- get_assignments_with_rescaled_null_grades()

These have been kept because continue being used by restore:

- \core\task\refresh_mod_calendar_events_task

MDL-65809 upgrade: remove get_assignments_with_rescaled_null_grades

This function was used only by deleted upgrade steps
so it's safe to proceed with straight deletion, considering
it internal. Deletion has been documented in corresponding
upgrade.txt files.

MDL-65809 upgrade: remove filter_mathjaxloader_upgrade_xxx

These functions were used only by deleted upgrade steps
so it's safe to proceed with straight deletion, considering
them internal. Deletion has been documented in corresponding
upgrade.txt files:

    - filter_mathjaxloader_upgrade_cdn_cloudflare()
    - filter_mathjaxloader_upgrade_mathjaxconfig_equal()

MDL-65809 upgrade: remove format_xxx_upgrade_remove_numsections

These functions were used only by deleted upgrade steps
so it's safe to proceed with straight deletion, considering
them internal. Deletion has been documented in corresponding
upgrade.txt files:

    - format_topics_upgrade_remove_numsections()
    - format_topics_upgrade_hide_extra_sections()
    - format_topics_upgrade_add_empty_sections()
    - format_weeks_upgrade_remove_numsections()
    - format_weeks_upgrade_hide_extra_sections()
    - format_weeks_upgrade_add_empty_sections()

MDL-65809 upgrade: remove upgrade_fix_config_auth_plugin_names

These functions were used only by deleted upgrade steps
so it's safe to proceed with straight deletion, considering
them internal. Deletion has been documented in corresponding
upgrade.txt files:

- upgrade_fix_config_auth_plugin_names()
- upgrade_fix_config_auth_plugin_defaults()

MDL-65809 upgrade: remove upgrade_block_positions

This function was used only by deleted upgrade steps
so it's safe to proceed with straight deletion, considering
it internal. Deletion has been documented in corresponding
upgrade.txt files.

MDL-65809 upgrade: remove upgrade_theme_is_from_family

These functions and setting were used only by deleted upgrade steps
so it's safe to proceed with straight deletion, considering
them internal. Deletion has been documented in corresponding
upgrade.txt files:

- upgrade_theme_is_from_family()
- upgrade_find_theme_location()
- linkcoursesectionsupgradescriptwasrun setting

MDL-65809 upgrade: remove upgrade_fix_block_instance_configuration

The upgrade_fix_block_instance_configuration() function was used
only by deleted upgrade steps so it's safe to proceed with straight
deletion, considering it internal. Deletion has been documented in
corresponding upgrade.txt files.

MDL-65809 environment: mbstring extension required

MDL-65809 environment: PHP 7.2 required

MDL-65809 environment: postgres requirement up to 9.5

MDL-65809 environment: mariadb requirement up to 10.2

MDL-65809 environment: 3.5 (LTS) required

MDL-65809 environment: 3.9 base information

This is a direct copy of the 3.8 branch to have changes
under control easier in next commits.

MDL-63650 core_message: Final deprecation of mark_all_read_for_user

MDL-67380 lib: Upgrade GeoIP2 lib to 2.10.0

MDL-67380 lib: Upgrade MixMind DB reader lib to 1.5.1

MDL-67380 lib: Update GeoIP2 and MaxMind DB reader versions in Moodle

weekly release 3.9dev

NOBUG: Fixed SVG browser compatibility