[ticket/11444-wip] Remove notifications_table from the manager

PHPBB3-11444
[ticket/11444] Update board::purge_notfication after rebase

PHPBB3-11444
[ticket/11444] Fix tests configuration

PHPBB3-11444
[ticket/11444] Update constructor

PHPBB3-11444
[ticket/11444] Update type\base::mark()

PHPBB3-11444