Fixed some localization strings
Reviewed/optimized product deletion handling
Add option to hide products from the stock overview page (closes#906)
Prefill default_due_days also on the inventory page (closes#591)
Added DataTables accent chinese-string plugin (closes#872)
Show costs and calories per recipe ingredient (closes#1072)
Fixed user permission saving (fixes#1099)
User permissions should not have an effect for demo mode (closes#972)
Handle QU conversion when consuming a substituation (child) product (fixes#1118)
Consume/open any child product when the parent product is not in stock (closes#899)
Added a retry camera barcode scanning button to product picker workflow (closes#736)
* Add permissions to Database & add "User"-classes
* Add UI & API for Permissions, protect "User"-(Api)-Controller with new permissions.
* Add some permissions.
* Add permission localization
* Add error handling.
* Error pages: only redirect on 404
* ExceptionController: return JSON-Response on api-routes
* Rename PRODUCT_ADD to PRODUCT_PURCHASE
* Move translation to new file
* Fix checkboxes stay selected on reload.
* Remove configurable User-implementation
* Remove MASTER_DATA_READ
* Disable buttons the user isn't allowed to use.
* Add default permissions for new users
* When migration to permissions, everyone starts as ADMIN
* Permission-Localization: add to transifex & LocalizationService
* Review
Co-authored-by: Bernd Bestel <bernd@berrnd.de>