bug #964 Fix erusev/parsedown vulnerabilitie (tony-tran)

This PR was merged into the master branch.

Discussion
----------

Fix erusev/parsedown vulnerabilitie

Hi,

A little PR to fix erusev/parsedown vulnerabilitie

<img width="771" alt="Capture d’écran 2019-04-07 à 17 49 44" src="https://user-images.githubusercontent.com/5413075/55686098-95b4de80-595d-11e9-8671-d1df0f4b0a0d.png">

Commits
-------

c41004c Fix erusev/parsedown vulnerabilitie

Author: javiereguiluz