4077: Provide preview of what markdown fields will become after submitting


What's the URL of the page this enhancement relates to, if any?


Describe the enhancement and the motivation for it.

I'd like to be able to view a preview of what my issue will look like after being published. Currently the markdown rendering present in the editor does not match what actually gets displayed very well (The final presentation adds tons of unexpected blank lines etc.).

Alternatively it would be acceptable if the final rendering looked more like the editor mark down (which I'd argue at this time is much more readable).

What operating system are you using? What browser?

OSX 10.11, FirefoxNightly 47