Add option to plot "no-data" plots on a map
Add a user configurable option that changes the "no-data" plots to show an empty map instead of the red no data message. By default the software would still show the red no data message plot unless the user actively asks for an empty mapped plot.
Note, in the case of winds, making this change will require first fixing how the domain is specified (issue #43) in order to get the correct plot range without any data in it.