Change: loading sequence

Changed it so that each object (playerinfo, agentList and starmap, in
that sequence) is loaded into memory after each object's XML file is
created.  This ensures that playerinfo is immediately accessible at
generation time for all subsequent objects.
Added: investments

Added investments as a sub-class of playerinfo as well as the ability to
display all of the stuff and manipulate them fairly well.  Seem to be
getting the hang of it...  JINX!