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

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

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

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

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

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.

weekly release 3.9dev

NOBUG: Fixed SVG browser compatibility

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

Merge branch 'MDL-67151-master' of git://github.com/rezaies/moodle

MDL-67151 qtype_numerical: convert the tolerance to string before saving

Fix the sqlserver issue when saving a number into a text field

Merge branch 'master_MDL-63795_core_setting_defaults' of https://github.com/mattporritt/moodle

Merge branch 'MDL-67483-qos-perf' of https://github.com/brendanheywood/moodle

MDL-63795 Administration: CLI upgrade apply all settings

This patch fixes a regression caused by MDL-62777.  MDL-62777 added output to inform
administrators of new default settings.  However, the recursion in the code did not
handle new settings made available as the result of the defaults of other settings
being set.
This patch fixes the issue, now all defaults are correctly set, even those exposed
after other defaults are set.

MDL-67483 tasks: Improvements to adhoc task queue at very high scale

Merge branch 'MDL-67151-master' of git://github.com/rezaies/moodle

Merge branch 'MDL-54554-master' of git://github.com/abgreeve/moodle

Merge branch 'MDL-67244-master' of git://github.com/ferranrecio/moodle

Merge branch 'MDL-64695' of https://github.com/paulholden/moodle

Merge branch 'master_MDL-66972_Streaming_file_types' of https://github.com/mattporritt/moodle

Merge branch 'MDL-67388-master-2' of git://github.com/rezaies/moodle

MDL-67388 lib: Upgrade babel polyfill to version 7.7.0

Merge branch 'MDL-66332-master' of git://github.com/ferranrecio/moodle

Merge branch 'master_MDL-67433' of https://github.com/golenkovm/moodle

Merge branch 'MDL-67381-master' of git://github.com/rezaies/moodle

MDL-66332 tool_capability: adding acceptance tests

MDL-66332 too_capability: add show differences option

MDL-67433 tool_task: Add limits to adhoc CLI runner.

Merge branch 'MDL-60854-master' of git://github.com/aanabit/moodle

Merge branch 'MDL-60855-master' of git://github.com/aanabit/moodle

Amended a couple of "depecated" typos

Merge branch 'MDL-67464-master' of git://github.com/sarjona/moodle

Merge branch 'MDL-65722-no-lock-db' of https://github.com/brendanheywood/moodle

Merge branch 'MDL-67304_master' of git://github.com/dmonllao/moodle

Merge branch 'master_MDL-67502' of https://github.com/golenkovm/moodle

Merge branch 'MDL-65735' of https://github.com/paulholden/moodle

Merge branch 'MDL-67165' of git://github.com/Chocolate-lightning/moodle_forum-project

MDL-67165 core_grade: Add the grader name to webservices

Merge branch 'MDL-67522-master' of git://github.com/marinaglancy/moodle

Merge branch 'MDL-67410-master' of https://github.com/felicemcc/moodle

Merge branch 'MDL-58827' of https://github.com/paulholden/moodle

Merge branch 'MDL-67327-master' of git://github.com/andrewnicols/moodle

MDL-67374 libraries: Update the upgrade instructions

MDL-67374 libraries: Upgrade SimplePie to version 1.5.3

Merge branch 'MDL-63048-master' of git://github.com/abgreeve/moodle

MDL-54554 files: Improve unoconv error logging & sanity checks

Merge branch 'MDL-66503-master' of git://github.com/abgreeve/moodle

Automatically generated installer lang files

MDL-67522 core_lock: fix mistype in config-dist

Automatically generated installer lang files

MDL-67502 backup: Fix moodle_exception path.

MDL-67410 Enrolments: Casting the perpage parameter to INT

On the course's Participants page, when manually enrolling users
the AJAX call might get excesively slow, due to the treatment
of the perpage parameter as a string, which gets concatenated with the
number 1 (perpage: parseInt(perpage) + 1) instead of performing a
numerical addition.

If there are for example 1500+ users on the site, the method
core_enrol_get_potential_users will be executed with a value of 15001
for the perpage parameter, rendering painfully slow.

MDL-65735 report_progress: reset URL start parameter in initials bars.

MDL-64695 tool_dataprivacy: filter site fullname in outgoing messages.

MDL-64695 privacy: filter site fullname in data export.

MDL-60854 general: Remove strings deprecated in 3.5

MDL-60855 general: Phase 2 in lib/deprecatedlib.php for 3.5 deprecations

MDL-67464 core_h5p: use h5p.com URLs in behat tests

The H5P content used in behat for validating external URLs
behaviour shouldn't point h5p.org because it may stop working
(it's not for real content). These content have been moved to
moodle.h5p.com (payment account).
Besides, the scenarios loading content from external URLs
have been labelel with @external.

weekly release 3.9dev

NOBUG: Fixed SVG browser compatibility

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

MDL-66999 theme_boost: @extend phpunit fixes

MDL-66999 theme_boost: @extend extends from bs2compat

MDL-66999 theme_boost: @extend remove extends for users

MDL-66999 theme_boost: @extend remove extends for questions

MDL-66999 theme_boost: @extend remove extends for grades

MDL-66999 theme_boost: @extend remove extends for tables

MDL-67327 js: Make requirejs.php more fault tolerant

MDL-67154 theme_classic: fixing firefox printing

Automatically generated installer lang files

Merge branch 'MDL-67458-master' of https://github.com/snake/moodle

MDL-65722 core_lock: Avoid DB calls in postgres lock by using a hash

MDL-67458 core: removing stale cohortroles and role assignments

MDL-67458 tool_cohortroles: remove role mapping for deleted roles

Before syncing anything, clean up records pointing to deleted roles.

MDL-66503 themes: Set the embed page to display block.

Merge branch 'MDL-67371-master' of git://github.com/rezaies/moodle

Merge branch 'MDL-67434-master' of git://github.com/junpataleta/moodle

Merge branch 'MDL-66936-master' of git://github.com/marinaglancy/moodle

Merge branch 'MDL-67179' of git://github.com/Chocolate-lightning/moodle

Merge branch 'MDL-67277-master-strongtopics' of git://github.com/mudrd8mz/moodle

Merge branch 'MDL-67154-master' of git://github.com/ferranrecio/moodle

Merge branch 'MDL-67362-antivirus-config-log' of https://github.com/brendanheywood/moodle

Merge branch 'MDL-67451-master' of git://github.com/sarjona/moodle