Add links to the markdown cheat sheet and maybe an HTML editor option?

[ItsNoted]

I noticed links are missing from the cheat sheet. I am no markdown pro and it would be helpful to have a copy pasta for links in the cheat sheet :)

Also, any chance to get an option for a fancy pants editor instead of markdown? This way we have an option like you you do on Reddit comments for example.

[Dont-ask-for-it]

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