Fuel Codes | Add natural gas-based gasoline to list of approved fuels table |0|

https://trello.com/c/WOuAmTzu/1286-fuel-codes-add-natural-gas-based-gasoline-to-list-of-approved-fuels-table-0

Add "**natural gas-based gasoline**" as a fuel option within the list of approved fuels table (created in Card 939). This fuel needs to be a selection option when adding or updating a new fuel code.