Fix MeshQuality Python test.

A new python version called MeshQuality.py has been
 written, it is based on MeshQuality.cxx.

The old meshQuality.py has been deleted.

The new version tests mesh quality more thoroughly than
 the old version and produces the same output
 as MeshQuality.cxx.

Change-Id: I8b98a24d2dbb2721ea6a32ba614835c75caeb873
Signed-off-by: Andrew Maclean <andrew.amaclean@gmail.com>
Merge topic 'NewPyhonVersionOfMeshQuality' into master

57d4214c Fix MeshQuality Python test.