fix upload image container's CSS
loading product image will auto fit to the order
+product order in category
edit models mode
Product:
search
edit

Category:
user image cover in product list

fix:
product category reference order
fix:
when update product, we should keep original category reference order
fix:
after delete product, page white...???
Product:
+create
Product: reload table after dialog close
+Spec admin panel: create / update / resort / delete
+tag management
Spec: +max order on create