Fixed TrackTool to display Rad instead of Lat for ring shape images. Modified...

Fixed TrackTool to display Rad instead of Lat for ring shape images. Modified ProjectionFactory to create output cubes with at least one sample and at least one line. Fixes #1635. Fixed ringscam2map matchmap bug. Fixes #1657.

git-svn-id: http://subversion.wr.usgs.gov/repos/prog/isis3/branches/cassinirings@5158 41f8697f-d340-4b68-9986-7bafba869bb8