[ticket/11849] Move pagination code to class

PHPBB3-11849
[ticket/11849] Test validate_start and on_page

PHPBB3-11849
[ticket/11849] Remove pagination functions

The functions where changed in 3.1 anyway, so we can just delete them

PHPBB3-11849
[ticket/11849] Add service definition

PHPBB3-11849
[ticket/11849] Replace pagination in viewforum.php with class

PHPBB3-11849
[ticket/11849] Update pagination code in viewtopic.php

PHPBB3-11849
[ticket/11849] Remove old pagination test

PHPBB3-11849
[ticket/11849] Update pagination in viewonline.php

PHPBB3-11849
[ticket/11849] Update search and memberlist

PHPBB3-11849
[ticket/11849] Update UCP notifications and pm folder

PHPBB3-11849
[ticket/11849] Update rest of the UCP modules

PHPBB3-11849
[ticket/11849] Update some ACP modules with new pagination

PHPBB3-11849
[ticket/11849] Update more MCP calls to pagination class

PHPBB3-11849
[ticket/11849] Fix more function calls

PHPBB3-11849