Revise template format

[Kexanone]

Description:

I've developed an experimental template format for Achilles a couple of months ago:

• Example template
• Experimental template generator/spawner

My suggestion is to adapt this template format or a similar one in ZEI.

Motivation:

The advantage of the new format is that 3D rotations, textures and building damage states can be saved/loaded.

The Format:

[
    [<format type>, <template category>, <template name>, <author>],
    [<house class>, <hit point damage array>],
    [<furniture class>, <rel pos>, <rel dir>, <rel up>, <obj texture array>, <obj material array>],
    ... other furnitures ...
]

The first two subarrays containing the template info and building data probably have to be changed. For instance, it doesn't make sense to save the building class in every template.