[ticket/12961] Add link in anti-spam ACP page to titania

PHPBB3-12961
[ticket/12961] Change url to https://www.phpbb.com/go/anti-spam/

PHPBB3-12961
[ticket/12961] Change url to anti-spam-ext

As per IRC suggestion

PHPBB3-12961
[ticket/12961] Refactor lang entry

PHPBB3-12961
[ticket/12961] Move link to language file

PHPBB3-12961
[ticket/12961] Add additional link to the KB

PHPBB3-12961
[ticket/12961] Remove target="_blank" and switch to <strong>

PHPBB3-12961
[ticket/12961] Fix missing phpBB.com

Don't know how that happened. Weird

PHPBB3-12961
[ticket/12961] Shorten ext-db link text

PHPBB3-12961
[ticket/13022] Condition Return to advanced search link

PHPBB3-13022
[ticket/13022] Remove ternary condition

PHPBB3-13022
[ticket/13022] Language adjustments

PHPBB3-13022
[ticket/13064] Revert "[ticket/13064] Validate the migrations provided to ..."

This reverts commit 46a9fe93d797bf7d56fd9b1e204f3c0459270122.

PHPBB3-13064
[ticket/12963] Correctly load migration files from migration/ in tests as well

PHPBB3-12963
Merge pull request #2964 from nickvergessen/ticket/12963

[ticket/12963] Correctly load migration files from migration/ in tests as well

* nickvergessen/ticket/12963:
  [ticket/12963] Correctly load migration files from migration/ in tests as well
[ticket/12963] Fix the migration's finder for the tests (path, new instance)

PHPBB3-12963
[ticket/13068] Language correction in FIELD_IS_CONTACT_EXPLAIN

PHPBB3-13068
Merge remote-tracking branch 'Nicofuma/ticket/12963' into develop-ascraeus

* Nicofuma/ticket/12963:
  [ticket/12963] Fix the migration's finder for the tests (path, new instance)
Merge remote-tracking branch 'GiampaoloFalqui/develop-ascraeus' into develop-ascraeus

* GiampaoloFalqui/develop-ascraeus:
  [ticket/13068] Language correction in FIELD_IS_CONTACT_EXPLAIN
[ticket/12963] Revert back to "migrations" folder name for extensions

The issues that can be created with the name change are just too much

PHPBB3-12963