Solution for: Differentiate Locked and Unlocked Backgrounds (#4261)

1. Added two new background-specific styles to `customizer.styl` (4px gray border and 4px white border) and utilized them in `profile.jade` by checking for ownership of the asset and displaying a border (or not, as appropriate). 

2. Editor automatically cleaned up some trailing spaces on a few lines of `profile.jade`
No problem, I always have to open [this Stackoverflow answer](http://stackoverflow.com/questions/7792652/what-is-the-best-way-to-conditionally-apply-a-class#answer-19052267) whenever I use an `ng-class`. You'd think I'd have the hang of it by now. :sweat: 

I should bookmark it or something.