Do not show deleted articles and suppliers for new deleiveries

app/views/deliveries/_form.html.haml

@@ -21,7 +21,7 @@
       $('#new_stock_article').removeAttr('disabled').select2({
         tags: true,
         placeholder: '#{t '.create_stock_article'}',
-        data: #{raw articles_for_select2(@supplier.articles).to_json},
+        data: #{raw articles_for_select2(@supplier.articles.undeleted).to_json},
         createTag: function(data) {
           return {
             id: 'new',

app/views/stockit/index.html.haml

@@ -50,7 +50,7 @@
         = t '.new_delivery'
         %span.caret
       %ul.dropdown-menu
-        - Supplier.order(:name).each do |supplier|
+        - Supplier.undeleted.order(:name).each do |supplier|
           %li= link_to supplier.name, new_supplier_delivery_path(supplier), tabindex: -1
 
 %table.table.table-hover#articles