Fliegl Timber Runner Wide With Autoload

This set of three fliegl timber trailers is for those, who like original fliegl timber trailer, but cant load it with front loaders or big arm loaders. Every second pair of forks was removed so there is much more place for loading / unloading. First one is 12m length (as original) and second is resized to 15m, so you can load up to 17m logs or 2 piles up to 7.5m or 3 piles up to 5m.

v1.2
-added new 20m trailer which can load logs to 1,2,3 or 4 piles (max. 5m, 6.5m, 10m and 20m)
-added additional forks which can be folded / unfolded when you loading short logs to 3 or 4 piles (15m and 20m trailers)
-added back attacher for trailer and trailerLow to all trailers
-small fixes in script