[Gzz] Ouch-- yes, cursor keys + wheel is a problem

[Benja Fallenstein]

Hi Tuukka--

ouch, you're right. In the Wheel view, using the up/down keys for 
rotation works when you're looking on the right side, navigating the 
structure poswards, but it falls on its knees when navigating negwards. 
The up/down keys suddenly feel like having the reverse meaning of before.

This is a severe bug. From a few minutes of trying, I am quite convinced 
that you cannot 'learn' to understand this behavior, because of the 
inconsistency between left and right. I don't know how to fix it :-(

Need to think, ideas are welcome :)

- Benja