Changes to address github ticket: Differentiate Locked and Unlocked Backgrounds (#4261). Added two new background-specific styles to customizer.styl and utilized them in profile.jade by checking for ownership of the asset and displaying a border or not, as appropriate
Modified two-line solution for ticket #4261 to one-line based on feedback/solution from B. Barringer
Modified to 15px border and lock icon based on feedback from dev team
Merge pull request #4299 from pollockjj/develop

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