loading complete

- tweaked a bit the encounter format on dummy.txt
- fileops.cpp completed loading stuff from file and stored into template
object, to pass back to main()
- main.cpp changed place_objects function so that it loads stuff
properly from template, and use rng()

TO DO
This compiles and runs, but it probably messes up since monsters are
hardcoded in various parts of the code. So I need to go through the
whole thing and make code more generic to work with different monsters
created just via dummy.txt