[ticket/11606] remove preg_replace() /e modifier in make_clickable()

PHPBB3-11606
[ticket/11700] With namespaces interface will no longer be a valid classname

PHPBB3-11700
[ticket/11700] Modify all code to use the new interface names

PHPBB3-11700
[ticket/11700] Implement namespace loading in the class loader

PHPBB3-11700
[ticket/11700] Instantiate the class loader with namespace rather than prefix

PHPBB3-11700
[ticket/11700] include and define are not valid class names

PHPBB3-11700
[ticket/11700] Load namespaced classes in tests

PHPBB3-11700
[ticket/11700] Use a new style constructor for the error collector

PHPBB3-11700
[ticket/11700] Load the dbms with namespaces

PHPBB3-11700
[ticket/11744] Group join request notification

PHPBB3-11744
[ticket/11744] Move notification from ucp_groups to group_user_add

PHPBB3-11744
[ticket/11744] Create null log class (primarily for unit test)

PHPBB3-11744
[ticket/11744] Create base notification test class for setup

PHPBB3-11744
[ticket/11744] Group request test

PHPBB3-11744
[ticket/11744] Cleanup

PHPBB3-11744
[ticket/11744] Include once

PHPBB3-11744
[ticket/11744] Fix functional test case that's failing

PHPBB3-11744
[ticket/11744] Tables are not truncated in some dbms during tests

PHPBB3-11744
[ticket/11744] Empty notifications tables after testing them

PHPBB3-11744
[ticket/11744] spelling

PHPBB3-11744