Separate building documentations and notebook execution testing (#20)

* Fix switched notebook names and image not found

* Configure jupyter-book default behavior for publication w/o nb execution

* Add dedicated testing infrastructure to execute notebooks with nbmake

Separate building documentations and notebook execution testing (#20)

* Fix switched notebook names and image not found

* Configure jupyter-book default behavior for publication w/o nb execution

* Add dedicated testing infrastructure to execute notebooks with nbmake