utils.parseDate is now isodate.parse_date

remove utils.parseDate and update refs to it
init_logger before doing dep injection

module import dep's end up import isodate before
logging is initalized, causing a warning:

No handlers could be found for logger "rhsm-app.subscription_manager.isodate"
Merge pull request #532 from candlepin/alikins/init_log_before_inj_init

Alikins/init log before inj init