[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/13066] Add search results core event to modify search title

PHPBB3-13066
[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
[ticket/12963] Remove old migration/ folder from tests

PHPBB3-12963
[ticket/12963] Always use core_path and core_directory()

PHPBB3-12963
Merge pull request #2927 from Senky/ticket/13022

[ticket/13022] "Return to advanced search" wrong assumption

* Senky/ticket/13022:
  [ticket/13022] Language adjustments
  [ticket/13022] Remove ternary condition
  [ticket/13022] Condition Return to advanced search link
Merge pull request #2967 from nickvergessen/ticket/12963

[ticket/12963] Revert back to "migrations" folder name for extensions

* nickvergessen/ticket/12963:
  [ticket/12963] Always use core_path and core_directory()
  [ticket/12963] Remove old migration/ folder from tests
  [ticket/12963] Revert back to "migrations" folder name for extensions
Merge pull request #2875 from PayBas/ticket/12961

[ticket/12961] Add link in anti-spam ACP page which links directly to captchas in titania

* PayBas/ticket/12961:
  [ticket/12961] Shorten ext-db link text
  [ticket/12961] Fix missing phpBB.com
  [ticket/12961] Remove target="_blank" and switch to <strong>
  [ticket/12961] Add additional link to the KB
  [ticket/12961] Move link to language file
  [ticket/12961] Refactor lang entry
  [ticket/12961] Change url to anti-spam-ext
  [ticket/12961] Change url to https://www.phpbb.com/go/anti-spam/
  [ticket/12961] Add link in anti-spam ACP page to titania
[ticket/12598] Improve search box styling

PHPBB3-12598