added class SyncCatalogView
added class SyncCatalogView

 SyncCatalogView can be used for synchronizing the catalog list view with the cart.
  Use Angular directive <ANY shop-sync-catalog-item="..."> on each catalog item.

khchine5/django-shop,divio/django-shop,jrief/django-shop,khchine5/django-shop,rfleschenberg/django-shop,jrief/django-shop,awesto/django-shop,rfleschenberg/django-shop,rfleschenberg/django-shop,awesto/django-shop,nimbis/django-shop,khchine5/django-shop,divio/django-shop,jrief/django-shop,nimbis/django-shop,nimbis/django-shop,nimbis/django-shop,jrief/django-shop,khchine5/django-shop,rfleschenberg/django-shop,divio/django-shop,awesto/django-shop