This PR also fixes other PartDesign features as well.
Bugreport - http://freecadweb.org/tracker/view.php?id=2533
Pullrequest - https://github.com/FreeCAD/FreeCAD/pull/213
Fix bug# 2533 - Loft works even with no active body
Fix bug# 2533 - Loft works even with no active body
C++ beginner, willing to help FC with coding. Using FC for converting/decomposing STEP models into iges.