ETK 800 - EtkC extension pack 1.5

Hotfix for 0.17 + Added final Allroad version

meshes fixes attempt #1 (edge split)

thanks @vmlinuz pointing this out, I'm not sure I can do much better than that !

• Two new 3 cylinders engines 1.5t (petrol and diesel) :

• A new interior choice "Basic" less chrome and smaller Gps :

...

For 0.6.1 update :

• Updated missing front tires

Update for 0.5.4 (All engines retuned)

For Beamng 0.5.3 update and bugfixe

clutch wrong value bug (thank to @Neidjel for the report)

bugfixes (remove double exaust spoiler for 4 cylinders)

updated tacho