TP 30004  refactor category ctrl:
* Move hasFacetsOrCategories into toolbox
* Replace the product image in product-tile.html with vn-product-tile
* Add defualt image path to rootScope
Refactor displaying notifications into a service.
Refactor/Move Product into Toolbox
Housekeeping
Merge pull request #171 from volusion-angular-themes/30004-refactor-category

TP 30004  refactor category ctrl: