Vehicle Additions

This update adds seat mod support to the backhoe (+2 seats), tractor (+2 seats) and forklift (+1 seat).
I Moved all strobing lights to the light mod (normal headlights without mod).
I tweaked the models some more to adjust smoothing groups and some mod meshes.
I changed the display names to match the in-game names (this will not break saves).
I did some more cleanup work.

Improved the model for the homemade 3 wheeled motorcycle.
Fixed the drifting issue on the motorcycle with sidecar.
removed the invalid emissive setting on the rickshaw, sorry powertrooper1 you were correct, that was a bug.

Improved the model for the homemade 3 wheeled motorcycle.
Fixed the drifting issue on the motorcycle with sidecar.
removed the invalid emissive setting on the rickshaw, sorry powertrooper1 you were correct, that was a bug.

had to change entityclasses.xml as follows:
For version 3 the following property names have changed:
<property name="LootListAlive" value="??????"/>
<property name="Explosion.ParticleIndex" value="?"/>
<property name="Explosion.RadiusBlocks" value="?"/>
<property name="Explosion.RadiusEntities" value="?"/>
<property name="Explosion.BlockDamage" value="?"/>
<property name="Explosion.EntityDamage" value="?"/>
became:
<property name="LootList" value="??????"/>
<property class="Explosion">
<property name="ParticleIndex" value="?"/>
<property name="RadiusBlocks" value="?"/>
<property name="RadiusEntities" value="?"/>
<property name="BlockDamage" value="?"/>
<property name="EntityDamage" value="?"/>
</property>