documentation improvements

The documentation for configure_study states that "the method is used for going through and actually acquiring each dependency, substituting variables, sources and labels".

This doesn't seem to be true now:

def configure_study(self, submission_attempts=1, restart_limit=1,
                        throttle=0, use_tmp=False, hash_ws=False,
                        dry_run=False):
        """Perform initial configuration of a study..."""

        self._submission_attempts = submission_attempts
        self._restart_limit = restart_limit
        self._submission_throttle = throttle
        self._use_tmp = use_tmp
        self._hash_ws = hash_ws
        self._dry_run = dry_run

        LOGGER.info(
            "\n------------------------------------------\n"
            "Submission attempts =       %d\n"
            "Submission restart limit =  %d\n"
            "Submission throttle limit = %d\n"
            "Use temporary directory =   %s\n"
            "Hash workspaces =           %s\n"
            "Dry run enabled =           %s\n"
            "Output path =               %s\n"
            "------------------------------------------",
            submission_attempts, restart_limit, throttle,
            use_tmp, hash_ws, dry_run, self._out_path
        )

        self.is_configured = True

Start with maestrowf/datastructures/core/study.py at configure_study and compare its documentation with the implementation shown in the issue. Update the description so it accurately reflects the method's current behavior; done means the documentation no longer claims it acquires dependencies or substitutes variables, sources, and labels.