added a base type for json responses in baseresource abstract superclass. this type is to be extended in classes extending baseresource as a means of serialising responses with gson.
added baseresource#updateresource() to re-set a value at a given key.
fixed jackson objectmapping not correctly constructing request entities.
added subclass answersresponse in answersresource for json responses.
added gson-generated responses in answersresource.
added subclass formsresponse in formsresource for json responses.
added gson-generated responses in formsresource.