Add push buttons and support inactive products

app/assets/javascripts/supplier/app/models/product.js.coffee

@@ -1,10 +1,11 @@
 attr = DS.attr
 App.Product = DS.Model.extend Ember.Validations.Mixin,
   name: attr 'string'
-  price: attr 'number'
+  price: attr 'number', defaultValue: 0
   code: attr 'string'
   description: attr 'string'
   visible: attr('boolean', defaultValue: true)
+  active: attr('boolean', defaultValue: true)
   position: attr('number', defaultValue: 0)
   image: attr()
   product_category: DS.belongsTo('product_category')
@@ -23,5 +24,8 @@ App.Product = DS.Model.extend Ember.Validations.Mixin,
     #true
   #).property('price')
   validations:
-    name: {presence: true}
-    price: {format: /^[+-]?\d+(\.?\d?\d)?$/}
+    name:
+      presence: true
+    price:
+      format:
+        width: /^[+-]?\d*(\.?\d?\d)?$/