Edw file4

Should take care of final wrap issues for my part of this task:

* Add cron scripts
* Fixes to inventory feature (-C compare)
* Additional error checking (encoded schema version, EDW likely schema change)
* Changed action based on non-empty EDW errorMessage field (sets status to OBSOLETE rather than suppressing sync)
* Add TODO and WARNING comments (highlight areas to target for perf improvement, code streamlining)