[ticket/12514] Add test for "int" type custom profile field

PHPBB3-12514
[ticket/12514] Add unit test for type_string and type_string_common field types

PHPBB3-12514
[ticket/12514] custom_string_test is no longer required

PHPBB3-12514
[ticket/12514] Add unit test for drop down type custom profile field

PHPBB3-12514
[ticket/12514] Use @return null instead of @return void

PHPBB3-12514
[ticket/12514] Move requires to the top of the files

PHPBB3-12514
[ticket/12514] Add newline at the end of file for type_dropdown_test.php

PHPBB3-12514
[ticket/12514] Cleanup for type_dropdown_test.php

PHPBB3-12514
[ticket/12514] Add unit test for type_bool custom profile field

PHPBB3-12514
[ticket/12514] Add unit test for type_date custom profile field

PHPBB3-12514
[ticket/12514] Add unit test for type_url custom profile field

PHPBB3-12514
[ticket/12514] Multi value GET parameters are invalid for phpBB

PHPBB3-12514