Front-End :: Mobile Navigation, Icon Fonts, and general mixins for RWD

- Mobile navigation: Markup and JS that triggers the main menu for mobile and tablet. For now, the JS is in the View, we need to discuss how we are going to handle js.

- Rems: I've set the dimensions for the HTML tag to 62.5% (10px) for RWD and it caused some styles that you had created before to change (mostly font-size). I'll fix that. Unless you have reservations about using Rems...

- Icon Fonts: I've added a few icons that we might use throughout the website. (Can be temporary if you don't like them...)

- Mixins: I've added mixins for Rems, Breakpoints and general screen size variables; 

Ready for QA, O Captain! My Captain!


DM.