Feature: Stock Purchase Metrics (#2135)

* Feature: Stock Purchase Metrics

* chart update

* Refactor to chartjs

* More suggestion edits

- locale in javascript
- global translations
- commit migrations sql file

* Rename 0215.sql to 0216.sql

Fixed merge conflict

* Fixed merge conflict

* Applied code style

* Added missing demo data translations

* Removed unused package "canvasjs"

* Don't include daterangepicker globally when only needed on a single page / fixed view section imports

* Rename this to "Spendings" / name it more generically "Stock reports"

* Reuse the existing product_price_history view

* Final cleanup

* Whitespace fix

---------

Co-authored-by: Travis Raup <travis.raup@platform.sh>
Co-authored-by: Bernd Bestel <bernd@berrnd.de>

routes.php

@@ -63,6 +63,8 @@ $app->group('', function (RouteCollectorProxy $group) {
 		$group->get('/stockentry/{entryId}/grocycode', '\Grocy\Controllers\StockController:StockEntryGrocycodeImage');
 		$group->get('/stockentry/{entryId}/label', '\Grocy\Controllers\StockController:StockEntryGrocycodeLabel');
 		$group->get('/quantityunitconversionsresolved', '\Grocy\Controllers\StockController:QuantityUnitConversionsResolved');
+
+		$group->get('/stockreports/spendings', '\Grocy\Controllers\StockReportsController:Spendings');
 	}
 
 	// Stock price tracking