[6.0] station module snapping and rotation are too aggressive

[rudi_pioneer]

Annoying but not blocking:

- rotating or moving elements in station editor make them snap to neighbors so much that it's hard to properly rotate and position unless working on empty space (which is at premium)
- x/y/z specific move arrows and rotation circles often cover so much of the object that it's hard to just move it elsewhere by clicking and dragging on object itself

Since in some case snapping is what's wanted, and in some not (and same for clicking on move/rotate lines vs moving object), ideally solution would let me choose which one should happen at the time. I imagine it as keyboard shortcuts, since i can see shift happen many times while working on the station.

Video: https://www.dropbox.com/s/xn1cr0zpael2v ... 2.mp4?dl=0