[ticket/12808] Fix small gap between username and drop-down arrow

PHPBB3-12808
[ticket/12807] Changes PRUNE_FREQ to PRUNE_SHADOW_FREQ/_DAYS

PHPBB3-12807
[ticket/12807] Adds missing language variables language/en/acp/forums.php

PHPBB3-12807
[ticket/12807] New variables for _EXPLAIN

PHPBB3-12807
[ticket/12815] Show memberlist link for guests (if permitted)

PHPBB3-12815
[ticket/12815] Remove S_REGISTERED_USER for team link

PHPBB3-12815
Merge remote-tracking branch 'PayBas/ticket/12815' into develop-ascraeus

* PayBas/ticket/12815:
  [ticket/12815] Remove S_REGISTERED_USER for team link
  [ticket/12815] Show memberlist link for guests (if permitted)
Merge remote-tracking branch 'PayBas/ticket/12808' into develop-ascraeus

* PayBas/ticket/12808:
  [ticket/12808] Fix small gap between username and drop-down arrow
Merge remote-tracking branch 'Crizzo/ticket/12807' into develop-ascraeus
[ticket/12810] Use correct template vars for shadow pruning settings

PHPBB3-12810
Merge pull request #2699 from marc1706/ticket/12810

[ticket/12810] Use correct template vars for shadow pruning settings

* marc1706/ticket/12810:
  [ticket/12810] Use correct template vars for shadow pruning settings
[ticket/12515] Remove check for PostgreSQL 8.3+

PHPBB3-12515
Merge pull request #2654 from nickvergessen/ticket/12515

[ticket/12515] Remove check for PostgreSQL 8.3+ in search

* nickvergessen/ticket/12515:
  [ticket/12515] Remove check for PostgreSQL 8.3+
[ticket/12775] Add a conter_factory class and remove functions_container

PHPBB3-12775
[ticket/12775] Add customs parameters

PHPBB3-12775
[ticket/12775] Don't assign $container to null

PHPBB3-12775
[ticket/12775] Add a config.php class (and service)

PHPBB3-12775
[ticket/12775] Add get() and get_all() into config_php

PHPBB3-12775
[ticket/12775] Use the config.php handler in \phpbb\config_php

PHPBB3-12775
[ticket/12775] Rename the variables into common.php

PHPBB3-12775