links to markdown syntax

[DolphinDTM]

couldn't figure out how to do this myself because python translates the brackets to normal text making it parse incorrectly in the html.

Anyway, both in the submission and the impre forms, it would be rather helpful if we linked to https://github.com/adam-p/markdown-here/wiki/Markdown-Cheatsheet since we shouldn't assume that everyone is familiar with Markdown syntax.