PATH: post processor tweaks and loop select.

rename generic_post.py: This is actually a post specific to a machine.  The generic name is confusing
fix test case. Contour has no plunge angle
scrubbing postprocessors for python 2 style prints
Keep loop select usable when task panel is open.

src/Mod/Path/PathScripts/opensbp_pre.py

@@ -93,7 +93,6 @@ def parse(inputstring):
     movecommand = ['G1', 'G0', 'G02', 'G03']
 
     for l in lines:
-        # print l
         # remove any leftover trailing and preceding spaces
         l = l.strip()
         if not l: