This also fixes contour extraction with global models and ensure that outer and inner contours are oriented properly.

- Don't launch any shell command from the notebook, especially TELEMAC compilation
- Remove a wrong statement regarding static and dynamic libraries
- Fix the URL to F2PY documentation

Corrections in the vnv notebook example to the new name of some function
of Section class and one fix to detect the right geometric format for
MascaretGeoFile class

+ upate of NEWS.txt for modifications of Mascaret file Python Classes

Replace their content with IPython magic commands and direct calls to Python script

Add an option to points_in_poly  and set_data_in_poly to have a tolerance to determine if a point is in a polygon.

ChopSelafin, AlterSelafin, CrunchSelafin, scanSelafin, scanSpectral,
subSelafin, TransfSelafin classes no longer used.
All the functionalities are now either in run_telfile.py or in
pretel/compute_var.py

Also applying coding convention of some files.