[ticket/12334] Change get_profile_value_raw_data to profile_value_raw_data

PHPBB3-12334
[ticket/12334] Group profile fields test

PHPBB3-12334
[ticket/12334] Improve type_dropdown's test description

PHPBB3-12334
[ticket/12334] Add string test for type_int

PHPBB3-12334
[ticket/12334] Add additional test for type_string

PHPBB3-12334