Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/12293] Add missing compact() call to phpBB/phpbb/log/log.php events.
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/12292] Improve style details page
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/11357] Correcting invalid markup
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/11904] Update explanation for what Allow CDN does
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/12035] Correcting the condition
  [ticket/12035] Adding necessary conditions
  [ticket/12035] Adding link to user posts to ACP page
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/12289] Add viewtopic template events for posts specific custom notices
Merge branch 'develop-ascraeus' into develop

# By Joas Schilling
# Via Dhruv (1) and Joas Schilling (1)
* develop-ascraeus:
  [ticket/12268] Do not use substr but just compare the character
  [ticket/12268] Rename class file to recursive_dot_prefix_filter_iterator.php
  [ticket/12268] Move class out of extension namespace and rename it
  [ticket/12268] Do not search in folders starting with a dot
  [ticket/12268] Use FilesystemIterator::SKIP_DOTS
  [ticket/12268] Extension finder should not crawl through .git/ of extensions
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/12292] Fix syntax error in admin.css
[ticket/11336] Changes "leaders"-mode to "team"-mode and so in test-file

PHPBB3-11336
[ticket/11336] Changes language variabel LOGIN_EXPLAIN_LEADERS to _TEAM

PHPBB3-11336
[ticket/11336] Adds redirect for old "leaders" mode

PHPBB3-11336
[ticket/11336] Adds 301 info to redirect

PHPBB3-11336
Merge remote-tracking branch 'crizz0/ticket/11336' into develop-ascraeus

* crizz0/ticket/11336:
  [ticket/11336] Adds 301 info to redirect
  [ticket/11336] Adds redirect for old "leaders" mode
  [ticket/11336] Changes language variabel LOGIN_EXPLAIN_LEADERS to _TEAM
  [ticket/11336] Changes "leaders"-mode to "team"-mode and so in test-file