Disable Survival Spawner being auto added.

Now you don't get spawner if you try to launch the game with no bots.
It didn't work correctly, adding a spawner for ALL single player battles
due to weblobby not specifying default modoptions.

Forb didn't like this behavior anyway, and neither did I.
Remove excessive debug output from spawner.
Scale Queen health with difficulty.
Merge pull request #11 from db81/less_spawny_spawner

Less spawny spawner and Queen health scaling