Paste text input field could be nicer

[chriskuehl]

Currently just it's a big <textarea>.

That's fine when you're just pasting text in and hitting Submit, but anecdotally, I've observed a large number of people who actually write or format code in this <textarea> before submitting. It could be a big quality of life improvement to use a fancier mini-code editor (maybe something like CodeFlask) which has support for features such as keeping your indent, indenting multiple lines, syntax highlighting, etc.