Havok Material a Layer update

1. Added havok material definitions for Fallout 3. Only basic 31
materials defined. Function of other bits included in description.
2. Removed game prefix from havok material definitions.
3. Added havok layer definitions for Fallout 3.
Conflicts:
	nif.xml
Correction of Skyrim materials order
Corrected order of materials in list of Skyrim materials to be sorted
ascending.
Corrected spelling mistake - object
Merge pull request #26 from ttl269/feature/havok-Material-and-Layer-update

havok Materials and Layers update