Fix #138 - removed default date from scheduler stored procedures

This commit fixes the issue where the scheduler service specifies UTC time as the default for "now()" while the SQL server is running in a different time zone.  If the SQL server is running in a different time zone, then the discrepancy between "getdate()" on the server and "DateTime.UtcNow" in the scheduler services will lead to strange behavior.

I guess when you live in GMT you don't struggle with such things. ;-)