Tutorial 1, Interactive Demos 2, 2.2, 3, and 3.3 magic cell

[spirosChv]

In these Interactive Demos the magic cell %%html is used. However, to correctly run the book workflow and to run without error on kaggle, the magic cell call should be placed on top of the corresponding cell. This destroys the hidden cell. Also, these demos contain a lot of coding lines, thus it is hard for the readers if they are not using google colab.

[spirosChv]

*.html files have been pushed on the static folder. The interactive demos are shown via

from IPython.display import HTML
display(HTML('filename.html'))

For more, see #560