Add ProjectCode support to build orders (#4808)

* Add "project_code" field to Build model

* Add "project_code" field to Build model

* build javascript updates

(cherry picked from commit 3e27a3b739)

* Update table filters

(cherry picked from commit 196c675585)

* Adds API filtering

* Bump API version

* Hide project code field from build form if project codes not enabled

(cherry picked from commit 4e210e3dfa)

* refactoring to attempt to fix circular imports

* Upgrade django-test-migrations package

* Fix broken import

* Further fixes for unit tests

* Update unit tests for migration files

* Fix typo in build.js

* Migration test updates

- Need to specify MPTT stuff

* Fix build.js

* Fix migration order

* Update API version

InvenTree/company/test_api.py

@@ -468,7 +468,7 @@ class SupplierPartTest(InvenTreeAPITestCase):
         self.assertIsNone(sp.availability_updated)
         self.assertEqual(sp.available, 0)
 
-        # Now, *update* the availabile quantity via the API
+        # Now, *update* the available quantity via the API
         self.patch(
             reverse('api-supplier-part-detail', kwargs={'pk': sp.pk}),
             {