BOM Table Improvements (#3310)

* Bug fix for "multi delete" form

- Was requesting entire LIST endpoint before launching form
- Could cause extremely long delays before window opened

* Improve rendering of "no stock available" in BOM table

* Adds footer row to BOM table

- Display total number of parts
- Display minimum "can build" amount

* Added extra information to footer row

* Annotate 'ordering' quantity to BOM list

- Display this quantity in the BOM table

* Bump API version

* JS linting

* Allow BOM list to be filtered by "on_order" parameter

* Add information showing amount that can be built once orders are received

InvenTree/stock/templates/stock/item.html

@@ -297,6 +297,7 @@
                                 stock_item: {{ item.pk }},
                             }
                         },
+                        multi_delete: true,
                         method: 'DELETE',
                         title: '{% trans "Delete Test Data" %}',
                         preFormContent: html,