add tags list to main page and fix update tags.
Merge branch 'product-tags' of github.com:rpanjwani/beLocal into product-tags

* 'product-tags' of github.com:rpanjwani/beLocal:
  Updated UI for categories list and product details modal
  Converted product details modal to directive
  Changed category dropdown

Conflicts:
	src/client/app/scripts/controllers/main.js
bug fix
Merge branch 'product-tags' of github.com:rpanjwani/beLocal into product-tags

* 'product-tags' of github.com:rpanjwani/beLocal:
  Fixed CSS styles
  Changed titles for categories on main page.

Conflicts:
	src/client/app/scripts/controllers/main.js