Ship table CapturedSignature from lane to server
New Paycard plugin settings:
* Allow EBT
  Only works when using the coordinated mode where
  POS sends the driver commands to switch screens.
  I want to be able to fine-tune behavior by changing
  POS configuration without recompiling the driver.
* Block Other Tenders
  If customer card is available, do not allow cashier
  to enter other non-integrated tenders. Has saved us
  a bunch of miskeys
* Blocking Exceptions
  List of tenders that ARE NOT blocked by the above.
  E.g., coupons.