Fracking: Draw a placeholder well-head graphic on well creation
Fracking: Fix NPE when the well doesn't ever hit shale
Fracking: Lighter air color
Fracking: Add a placeholder waste-water pond to each well

Also, make sure we drill far enough apart to not overlap.
Fracking: Fill the waste-water pond when emptying out the fracking fluid
Fracking: Change the scale on the groundwater pollution