added schema revisions for workflow template scripts to fail when expections are throw from productfetcher

ready for QA

option from the test_download workflow

- Local cluster can now run download workflows
- wf_monitor's timeout functionality now works the way we expect it to

- aat_wrest: utility for pulling metadata for calibration templates
- wf_framework: contains script for setting up CASA processing directory structure

WS-195, WS-76: Notification System now working and sending emails on request submission and completion