Added box model

Added box layout model globally and tidied up file.
Reworked alerts

Reworked alerts and removed unused class.
Typography

Improve base typography
Scaffolding

Tweaked scaffolding
Moved JS

Moved JS to footer in example file.
IE

Removed fixes for < IE9
Font icons.

Fix for font icons in IE
Modified example css

Modified example css for new box model layout
Moved ::selection

Moved ::selection into typography
Example CSS

Modified example CSS
Forms

Modified form styling
Tables

Modified table styling
IE font

removed IE font.js as it’s only needed for < ie8
Uniform

Removed uniform.js