fixed inverse edge funtion
correctly create edge table in bfsmem
fixed inverse edge funtion
fixed centers inverse function, correct generation
Merge branch 'bfsmem'

Conflicts:
	calc.cpp
optimization of poscenters
Crucial bugfix and documentation
minor optimisations and cleanup
wrong index
scrapping old code
mayor bugfix + random move generator
Merge branch 'master' into bfsmem8

Conflicts:
	calc.cpp
	create.cpp