Co-authored-by: Sujith Haridasan <sujith@moodle.com>

It seems that the new phpcs3 checker is now controlling those
line comments that previously were ignored.

This commit just looks for all the cases and bulk-add
them when needed. The bash script (mac) used to add all them is:

while read -r line; do
    arr=(${line//:/ })
    if [[ -n ${arr[0]} ]] && [[ -n ${arr[1]} ]]; then
        echo "  file ${arr[0]}, line ${arr[1]}"
        sed -i "${arr[1]}s/\$/\./" ${arr[0]}
    fi
done < <(find . -name version.php | xargs ag --nomultiline '>(version|requires) *=.*//.*[^;\.]$')

version = 2021052500 release version
requires= 2021052500 same than version

Why 20210525? (25th May 2021) ?

Because master is going to be Moodle 4.0, to be released
on November 2021. And, until then, we are going to have
a couple of "intermediate" releases:

- Moodle 3.10 to be released 9th November 2020. (2020110900)

  This version will be using versions from today to 2020110900
  (once it's released the YYYYMMDD part stops advancing).

- Moodle 3.11 to be released 10th May 2021. (2021051000)

  This version will be using versions from 3.10 release to 2021051000
  (once it's released the YYYYMMDD part stops advancing).

That means that all versions from today to 2021051000 are going
to be used by those 2 "intermediate" releases (3.10 and 3.11).

And we cannot use them in master, because it's forbidden to have
any overlapping of versions between branches (or different upgrade
paths will fail).

So, get that 2021051000, let's add it a couple of weeks to cover
the on-sync period (or a 2 weeks delay max!) and, the first version
that master can "own" in exclusive (without any overlap) is, exactly,
25th May 2021, hence our 20210525.

version = 2021052500 release version
requires= 2021052500 same than version

Why 20210525? (25th May 2021) ?

Because master is going to be Moodle 4.0, to be released
on November 2021. And, until then, we are going to have
a couple of "intermediate" releases:

- Moodle 3.10 to be released 9th November 2020. (2020110900)

  This version will be using versions from today to 2020110900
  (once it's released the YYYYMMDD part stops advancing).

- Moodle 3.11 to be released 10th May 2021. (2021051000)

  This version will be using versions from 3.10 release to 2021051000
  (once it's released the YYYYMMDD part stops advancing).

That means that all versions from today to 2021051000 are going
to be used by those 2 "intermediate" releases (3.10 and 3.11).

And we cannot use them in mater, because it's forbidden to have
any overlapping of versions between branches (or different upgrade
paths will fail).

So, get that 2021051000, let's add it a couple of weeks to cover
the on-sync period (or a 2 weeks delay max!) and, the first version
that master can "own" in exclusive (without any overlap) is, exactly,
25th May 2021, hence our 20210525.

version = 2020061500 release version
requires= 2020060900 current rc1 (week7roll1) version

version = 2019111800 release version
requires= 2019111200 current beta (week7roll1) version

version = 2019052000 release version
requires= 2019051100 current beta (week6roll2) version

version = 2018120300 release version
requires= 2018112800 current rc2 (week7roll1) version

version = 2018051400 release version
requires= 2018050800 current beta+ (week4roll1) version

version = 2017111300 release version
requires= 2017110800 current rc2 version

version = 2017051500 release version
requires= 2017050500 current rc1 version

version = 2016120500 release version
requires= 2016112900 current rc4 version

version = 2016052300 release version
requires= 2016051900 current rc1 version

version = planned 2015111600 release version
requires= current 2015111000 rc3 version

version = planned 2015051100 release version
requires= current 2015050500 rc1 version

Note: On purpose, the course format social wrong version (2015102100)
has been kept unmodified. Looking forward a solution right now.

This bumps all versions to planned 2.8 release
(2014111000) version and all the dependencies to
current 2.8rc1 (2014110400)

Based on a patch by Matthew Cannings, this replaces Book's previous/next arrow
image links with a choice of: no links, image links, or chapter title text links.

This bumps all versions to planned 2.7 release
(2014051200) version and all the dependencies to
current 2.7rc2 (2014050800)

Tomasz Muras authored Nov 24, 2013 and Eloy Lafuente committed Jan 29, 2014

Conflicts:
	mod/quiz/version.php

(versions, requires and dependencies)

This commit replays, conditionally, all the upgrade steps from
MOODLE_19_STABLE to MOODLE_23_STABLE in the mod_book activity. That
guarentees that any site using the mod_book before landing to core,
no matter if it was the latest or an outdated one will upgrade
perfectly to the expected current version.

As a general rule, everytime one contrib plugin lands to core, its
complete upgrade code must be kept, at least until the core version
that introduced it, is out completely from the upgrade requirement
conditions.

In this case, with the missing upgrade code being added to 2.4, it
will be safe to delete the upgrade steps once 2.5 (or upwards) become
a requirement. Never always.

- Replace numberingoptions_help by numberingoptions_desc.
- Delete the faq code and related styles.
- Bump version to force lang/style refresh.