Fixes issues #359 and #360.  Copies FulfillmentType to new fulfillment groups in matchFulfillmentGroupsToMultishipOptions method in FulfillmentGroupServiceImpl.  Adds FulfillmentType to key generation in getKey method in FulfillmentGroupServiceImpl.

Adds isShippable and getFirstShippalbeFulfillmentGroup methods to FulfillmentGroupServiceImpl.  Removes non-shippable order items from createPopulatedOrderMultishipOption method in OrderMultishipOptionServiceImpl.  Ignores non-shippable fulfillment groups in matchFulfillmentGroupsToMultishipOptions in FulfillmentGroupServiceImpl.