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


You could target the checked focused box directly with the following selector:

```css
input[type='checkbox']:checked + .wskLabel > .wskCheckbox:focus
```

Then use `::before` or `::after` pseudo-element to create an outline that doesn't look like butts.

If there is a desire to avoid the use of pseudo-elements, then we should come up with an alternative rather than simply leaving it how it currently is. Because right now the outline looks ridiculous when focused on a checked checkbox.