Added the new bed models.

I'll wire them to the game once the new creature definition format will be in.
Atually linked the spider and tentacle beds to the corresponding creatures.

Fixes #229
Added the Orc Bed while on it.
Merge pull request #234 from Bertram25/new_models

New bed models
Added the Lizardman Bed while on it.
Neutralized a few models normal until we have them working again.
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...
Added several new stats in the creature config file.

Most of them are now used when leveling up.

Also, the actual creature movement speed depending on the terrain is used
instead of its definition base value.

I also added a path() proxy function when called for creature for simpification
purpose.

For now, only the Physical attack/defense are used when fighting.
What's left to add is handling the natural range of the creature and split
physical/magical attack/defense.

Part of #152

Stats added in file.
    DigRate/Level
    ClaimRate/Level
    GroundSpeed/Level
    WaterSpeed/Level
    LavaSpeed/Level
    PhysicalAttack
    PhysicalAtk/Level
    MagicalAttack
    MagicalAtk/Level
    PhysicalDefense
    PhysicalDef/Level
    MagicalDefense
    MagicalDef/Level