Breadcrumb styled

Edited: _2Bhip_styles.css, index.html
Superscript added

Edited: _2Bhip_styles.css, index.html, controller.js,
_2Bhip_changelog.txt, extensions/store_cart.js
Cart shipping bar created

Edited: _2Bhip_styles.css, index.html
Still needs promocode field and button, and to change shipping selection
to drop down menu