[ic] clearing cart and customer info in Admin Enter Order

[interchange-users@icdevgroup.org (Aaron Hazelton)]

Hi all,

I was changing one of my stores around, so that when you
enter an order in the UI, it does not kick you out to the 
customer receipt page.  I just checked the implementation
of that feature in the new 4.9.3 and both have the same 
small inconvenience.  If you go back to enter another order
all of the customer information (less the cc) and the cart
contents are still there.  What would be the correct way,
then to clear that data?

thanks in advance!

Aaron