Fix for config file (thanks to Pugw4sh for the hint)

Makes it empty to prevent critical errors at start, so people will can unsubscribe it peacefully.

Alpha cutout for TerrainLod is set to 1, now it not cover holes right under you.

Add configurable parameters into config file:
max distances,
switchers to affect just big things, big moving things.
Give bigger basic render distance for some missed big structures.

Fix slider min and default values.
Fix wrongly high modifier math.
Add Draggable Things (crates, aimee robots, rovers) to have same render distance as Stairs and Big Structures.