Uniformization of the front/back Markdown rendering for tables

[davidbgk]

Context

When I add a table to the backend interfance, I want to see it rendered as a table on the frontend, so I can propose a nice visualization of the data.

Possible Implementation

Both implementations rely on CommonMark, the front is generated by Python so check if both libs follow the same version and if tables have to be activated.

[davidbgk]

[abulte]

@davidbgk apparently CommonMark-py does not support tables readthedocs/commonmark.py#28. It looks like Python-Markdown does though https://pythonhosted.org/Markdown/extensions/tables.html, should we consider switching?

[davidbgk]

@abulte you're right, tables are not part of the CommonMark spec, we should measure if tables are really in use before switching to something else if pertinent. It's biased because the current implementation doesn't encourage the use but anyway we have data so let's use it :)