[ticket/11692] Don't update search_type in dev migration if already appended

PHPBB3-11692
Merge pull request #1555 from EXreaction/ticket/11692

[ticket/11692] Don't update search_type in dev migration if already appended
[ticket/11698] Moving all autoloadable files to phpbb/

PHPBB3-11698
Merge pull request #1559 from naderman/ticket/11698

[WIP][ticket/11698] Moving all autoloadable files to phpbb/
[ticket/11696] Rename db_tools.php so it can be autoloaded

PHPBB3-11696
[ticket/11696] Remove manual loading of db_tools in extension controller test

Remember to store the file, before commiting it...

PHPBB3-11696
[ticket/11696] Rename constructor to __construct()

PHPBB3-11696
[ticket/11696] Move file to new directory

PHPBB3-11696
Merge pull request #1558 from nickvergessen/ticket/11696

[ticket/11696] Rename db_tools.php so it can be autoloaded
[ticket/11702] Fix forum_posts left over for link-click counts in viewforum.php

PHPBB3-11702
Merge remote-tracking branch 'nickvergessen/ticket/11702' into develop

* nickvergessen/ticket/11702:
  [ticket/11702] Fix forum_posts left over for link-click counts in viewforum.php
[ticket/11697] author_search() used incorrect parameter

The author_search() function in fulltext_mysql.php had an argument
$m_approve_fid_ary parameter but it was changed in the Docblock
and code to $post_visibility. This change renames that argument
according to the docblock, the code and to mirror the other classes.

PHPBB3-11697
Merge remote-tracking branch 'galaxyAbstractor/ticket/11697' into develop

* galaxyAbstractor/ticket/11697:
  [ticket/11697] author_search() used incorrect parameter