Cnc.set_absolute: actually set absolute mode
LiveView: angle is now adjustble
CncControl: position can now be adjusted from the interface
Align: Automatically orient bitmap. And stuff.
CncControl: added an assertion preventing too big travels..
Align: revise how point mapping works (no option type anymore)

- Also removed assertions of travel distance (they are in CncControl now)
- Some changes to try to make the move-to-clicked-point functionality work