Imperium/FT ships updated

I've added first draft designs for the mothership, transport and tanker
of
each fleet.

<http://ccwf.cc.utexas.edu/~jwlyon/FT/imperium/v2ships.htm>

The ZIP file is also updated.

<http://ccwf.cc.utexas.edu/~jwlyon/FT/imperium/V2ships.zip>

Jeff