[WIP] port profile page to backbone.js

this will port the javascript on profile pages
`/people/[guid]` and
`/u/[username]`
to use a backbone view.

Not finished, will create a backbone model in order to handle rendering more gracefully,
also, the persons stream doesn't show at this stage.
Well, the presenter would be passed to the view and provide methods to access the values we currently assign to these variables.