[WIP] PSM Step 1

This is totally WIP.
o.O wut. @pauladamdavis are you responsible for this? Why can't we just put it on the body and call it good?

Also, can we get stateful with this, as in, hook it in to an ember property rather than jquery it? 
In fact, if @johnonolan would be cool with marring the URL, it'd be sweet to put this in as a query param so that you can do /editor/5/?showSettings=true and link people to the PSM already expanded