Adding shoutbox feature for user pages and user's dashboard

@cgruppioni @chukdisc

I also know that I'm using _path for many link_tos, but those are all placeholders until I actually use them. Also, wouldn't mind tips on what I should be doing with my divs, classes and ids + css.
And here.  <html><img src="http://media0.giphy.com/media/6Q2KA5ly49368/200w.gif"></html>