Replace Frog, FrogDemo with FroggieView and FrogReconstruction with FroggieSurface

Replacements:

• Frog.py and FrogDemo.py have been replaced with FroggieView.py.
• FrogReconstruction.py has been replaced with FroggieSurface.py.

New programs:

• FroggieView.cxx and FroggieSurface.cxx have been added.