Revert "Move Code into Dropbox"

This reverts commit ba2cc5e9bdc0b1df89c703beb0fa6d01c50009b6.
Move Code out of Dropbox

It's taken over 24 hours and Dropbox still hasn't been able to sync all
the code, and I've heard more and more accounts of Dropbox accidentally
corrupting repositories while I've been waiting.

In light of this I say no to code in Dropbox for now.