Queryset annotation refactor (#3117)

* Refactor out 'ordering' serializer annotation field

* Refactor BomItem serializer annotations

* Factor out MPTT OuterRef query

* Add 'available_stock' annotation to SalesOrderLineItem serializer

- Allows for better rendering of stock availability in sales order table

* Improve 'available quantity' rendering of salesorderlineitem table

* Bump API version

* Add docstring

InvenTree/templates/js/translated/order.js

@@ -3540,9 +3540,35 @@ function loadSalesOrderLineItemTable(table, options={}) {
         columns.push(
             {
                 field: 'stock',
-                title: '{% trans "In Stock" %}',
+                title: '{% trans "Available Stock" %}',
                 formatter: function(value, row) {
-                    return row.part_detail.stock;
+                    var available = row.available_stock;
+                    var total = row.part_detail.stock;
+                    var required = Math.max(row.quantity - row.allocated - row.shipped, 0);
+
+                    var html = '';
+
+                    if (total > 0) {
+                        var url = `/part/${row.part}/?display=part-stock`;
+
+                        var text = available;
+
+                        if (total != available) {
+                            text += ` / ${total}`;
+                        }
+
+                        html = renderLink(text, url);
+                    } else {
+                        html += `<span class='badge rounded-pill bg-danger'>{% trans "No Stock Available" %}</span>`;
+                    }
+
+                    if (available >= required) {
+                        html += `<span class='fas fa-check-circle icon-green float-right' title='{% trans "Sufficient stock available" %}'></span>`;
+                    } else {
+                        html += `<span class='fas fa-times-circle icon-red float-right' title='{% trans "Insufficient stock available" %}'></span>`;
+                    }
+
+                    return html;
                 },
             },
         );