Skip Validating Queries when saving a dataflow

[mshparber5]

Skip Validating Queries when saving a dataflow

[James_Bartlett]

Please just make it so the only queries that get validated are the ones that were actually changed. I don't mind validating stuff I've been messing with, but I'm only modifying one or two queries at a time, so all of that extra validation work is completely unnecessary and wastes an extraordinary amount of time.