Rasa x table display

[ryanamannion]

Rasa X does not like to format tables well, and removes the whitespace used to make columns nice and neat

[ryanamannion]

I made a post here on the Rasa Community Forums about this issue, but received no responses

I found a workaround for the issue, but was foiled by another issue in Rasa X: local images not being displayed. I was able to turn the table into a png with the Pillow python package with the code seen commented out in this commit: fdea805

This issue has been posted about in github issues for Rasa here, and numerous times on the forum, e.g. here. I did not want to add more complexity with a flask app, so I abandoned the png table for the time being