Updated code to use jasonmayes checkboxes

Updated checkbox code to use material style checkboxes that work cross browser as seen here:
http://codepen.io/jasonmayes/pen/wxtFr
Currently supports IE9+, Chrome (Mobile + Desktop), Safari, Opera, Firefox


We want to ensure that all elements maintain the outline state for accessibility. Users who rely on keyboard navigation wouldn't be able to know if they've hit the element with outline:none;

One thing we could do is change the color of this to be a light/dark gray. That way it looks more pleasing but maintains accessibility.