table.census.r, set-up as single function

Should make this function easier to apply to different species.
plot.polygons.r  works, nearly complete
map.plot.r works, updates
command line, 7zip
7zip.compress.r works now!
table.census.r added code to deal with rana.lut

Deals with census files in which populations are sub-divided by their
size
plot.polygons.r add spotted frog