[ticket/12730] Add Google+ profile field type

Google+ has a "+" before a custom URL but doesn't for those which are using
their integer ID. To cover that we need to have an extra profile field

PHPBB3-12730
[ticket/12730] Add a Google+ field by default

PHPBB3-12730
[ticket/12730] Spaces in block header

PHPBB3-12730
[ticket/12730] Incorrect indentation for type_googleplus

PHPBB3-12730
[ticket/12730] Minor formatting fixes

PHPBB3-12730
[ticket/12730] Use string template for Google+ CPF instead of a new one

PHPBB3-12730
[ticket/12730] Update field_order for Google+ CPF

PHPBB3-12730
[ticket/12730] Add missing brackets to type_googleplus.php

PHPBB3-12730
[ticket/12730] Add unit test for type_googleplus

PHPBB3-12730
[ticket/12730] Set field_active to 1 for Google+ field

PHPBB3-12730
[ticket/12730] Missing newline at type_googleplus_test.php

PHPBB3-12730
[ticket/12730] Value shouldn't be escaped for schema_data.sql

PHPBB3-12730
[ticket/12730] Add functional test for Google+ field

PHPBB3-12730
[ticket/12730] Restore field_length to 10 for type_googleplus

PHPBB3-12730
[ticket/12730] Switch service name to googleplus for type_googleplus

PHPBB3-12730
[ticket/12730] Google+ field_order should be 13

PHPBB3-12730
[ticket/12730] Update field_length to be 20 by default for Google+

PHPBB3-12730
[ticket/12730] Fix type_googleplus_test to use same validation rule as the field

PHPBB3-12730
[ticket/12730] Update maxlen for type_googleplus to 255

PHPBB3-12730
[ticket/12730] Update Google+ button class to use proper identification

PHPBB3-12730