GUI update and some bug fixes

But: There is still a bug concerning the multiplication of
unidirectionally PHI-cut concepts.
BFCut added to Gui

And cut concepts with phi = 0 are now grey
Unidirectional Cuts Hopefully Finally Correct

phi_comp_bORf is now also used in the unidirectional cut systems and
comp_pers_cpt was adapted.
Plus some old files where killed.