Language setup

So, I thought the language-specific setup in the accounts page was getting a bit cluttered so I threw them into an accordion and it makes them a bit more organized. I could revert that if its not needed.

I added some instructions on getting set up with Python on OSX and Homebrew. I also pointed the link to the beginners guide download page of the python site. 

Let me know if anything needs fixing! :)

#455