Implemented tests for GetOrdersByDateRange, GetOrdersByPartnerOrderId, ModifyOrder, GetModifiedOrders, GetQuickApproverList, and ChangeApproverEmail.

Will need to rebase when Paul's CR lands.
Are we going to be worried about receiving an email from symantec? email.com is a real domain and if an email is generated it from our testing w/ symantec, it will send emails to this URL.  It may not be an issue for the scope of our tests -- but it might be important to make a note of changing this in the future, should we wish to change it.