cycling through cuts works again in prooftool, cli has now more commands for proof analyis (lkproof cut(formulas|occurrences|rules) and axiom(formulas|occurrences|rules), started adding lksk support to the projections (lksk projections are still buggy, but ordinary lk proofs should not be not affected)

git-svn-id: http://gapt.googlecode.com/svn/trunk/source@1875 85d21ef8-add0-11de-ae77-5bfb9c5a3f34