Remove the unused Resource class.
Change name of Result class to Resource.
Add lang parameter to the API class.
PEP8
Test for the 'lang' parameter.
Change the 'get', 'search', 'get_field_titles', and 'get_fieldnames_in_order' methods to be class methods.
Implement the 'get' and 'search' methods.
Update test fixture formatting to avoid JSON errors.
Modified test data fixtures for property groups and phases to be separate endpoints from the developments.