[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