Turned MaxHP into MinHP and made Awakeness, Hunger and HP healing configurable.

Part of #152
Merge pull request #237 from Bertram25/new_params

Turned MaxHP into MinHP and made Awakeness, Hunger and HP healing config...
Merge pull request #236 from Bertram25/new_models

Added the Lizardman Bed while on it.
Quick-fixed lizardman's bed name.

Prevent a useless segfault.

My apologies...
Removed a second Christian Cross in the Dungeon Siege level. ;)
Added the newest models.

I'll adapt the Credits as soon as I've got the license info for the textures.