Add a markdown previewer somewhere
Can we please add a markdown previewer somewhere (separate page, inline with profile create, wherever) that displays the same way that the show-profile page and experiment status page do?
Our markdown thing is less accepting than other markdown viewers (e.g. https://dillinger.io), so this would be useful, mostly for git-backed profiles with branches. They don't currently have a way to test long Instructions without firing off an experiment.