[ticket/13405] Fix a typo in phpbb/migration/data/v310/style_update_p1.php

PHPBB3-13405
Merge pull request #3204 from rxu/ticket/13405

[ticket/13405] Fix a typo in phpbb/migration/data/v310/style_update_p1.php

* rxu/ticket/13405:
  [ticket/13405] Fix a typo in phpbb/migration/data/v310/style_update_p1.php
[ticket/13396] Normalize multibyte characters in attachment file names.

PHPBB3-13396
[ticket/13400] Information text if the server load id high at search

PHPBB3-13400
Merge branch 'ticket/13400' into develop-ascraeus
Merge pull request #3208 from prototech/ticket/13396

[ticket/13396] Normalize multibyte characters in attachment file names.