Removing commented out code that is not being used.
Adds #member_fee and #guest_fee to CsiApi::GroupExClass that parses string returned by #fees
Adds CartItem and CartGenerator to allow cart items to be created and placed into array
Member#get_cart implemented to return array of CartItem objects using the CartGenerator class
Fixes edge case of a single piece of equipment for group ex class in EquipmentListGenerator
Refactors single item handling in EquipmentListGenerator
Fixes edge case where CartGenerator recieves cart_item_list that consists of only a single item.
Handles edge case for ReservationList when reservation info contains only a single reservation.