Context based false positive reduction 3

For T-Bro
I dunno man, you pick a name
Remove backtracking for locations
Grass left+right is now a seperate char
Merge branch 'master' into Threaded
Keep grass characteristics seperate
(also does 3x less work now)
Relative weights
Add negative weights + No grass characteristic
Merge branch 'Threaded' of github.com:DarthBo/beeldverwerking-project into Threaded
Quick cleanup