Part stocktake (#4069)

* Remove stat context variables

* Revert "Remove stat context variables"

This reverts commit 0989c308d0.

* Allow longer timeout for image download tests

* Create PartStocktake model

Model for representing stocktake entries against any given part

* Admin interface support for new model

* Adds API endpoint for listing stocktake information

* Bump API version

* Enable filtering and ordering for API endpoint

* Add model to permission group

* Add UI hooks for displaying stocktake data for a particular part

* Fix encoded type for 'quantity' field

* Load stocktake table for part

* Add "stocktake" button

* Add "note" field for stocktake

* Add user information when performing stocktake

* First pass at UI elements for performing stocktake

* Add user information to stocktake table

* Auto-calculate quantity based on available stock items

* add stocktake data as tabular inline (admin)

* js linting

* Add indication that a stock item has not been updated recently

* Display last stocktake information on part page

* js style fix

* Test fix for ongoing CI issues

* Add configurable option for controlling default "delete_on_deplete" behaviour

* Add id values to cells

* Hide action buttons (at least for now)

* Adds refresh button to table

* Add API endpoint to delete or edit stocktake entries

* Adds unit test for API list endpoint

* javascript linting

* More unit testing

* Add Part API filter for stocktake

* Add 'last_stocktake' field to Part model

- Gets filled out automatically when a new PartStocktake instance is created

* Update part table to include last_stocktake date

* Add simple unit test

* Fix test

InvenTree/build/templates/build/detail.html

@@ -466,7 +466,7 @@ $('#btn-create-output').click(function() {
     createBuildOutput(
         {{ build.pk }},
         {
-            trackable_parts: {% if build.part.has_trackable_parts %}true{% else %}false{% endif%},
+            trackable_parts: {% js_bool build.part.has_trackable_parts %},
         }
     );
 });