Get dashboard by slug or UUID

╭⁽˙͡˙̮ ⁾╮ Gives us nicer urls like `/dashboard/name-of-dashboard` ╭⁽˙͡˙̮ ⁾╮
(੭•̀ᴗ•̀)੭ Backwards compatibility with `/dashboard/391213f0-336f-11e4-8c21-0800200c9a66` (੭•̀ᴗ•̀)੭


![](http://38.media.tumblr.com/4d82e2e96929f904012c812213c21c14/tumblr_n36cpzjcEs1qbyf2jo1_500.jpg)