support for portrait screens

[l-leroux]

Feature Request

Is your feature request related to a problem or unsupported use case? Please describe.
As I use a portrait oriented screen, I often would like reducing the left part of the docs page, with the list of documents because this list reduce my real area of work.

Describe the solution you'd like
a toggle/button could close/open the column on demand.

Describe alternatives you've considered
Allow the choice for each user to locate this column on the top or the bottom of the page ?

Thanks !

[virgile-dev]

Hello
Thanks for the interest in the project.
This issue is a duplicate of #913