Make orders print preview run faster

Testcase to check if the print preview performance for purchase and sales invoices has improved.

1. Make sure you have the correct Setup for printing in Preferences:

   • Check always print preview

2. Open a purchase order, select one that includes:

   • different products
   • different ASI (e.g. Bio, CH, Inland, AdR, Freiland, Karotten-ID)

3. Press print preview

   • => print preview Einkaufsbestätigung opens in ~10s or less

4. Check the order and its lines

   • => each orderline is displayed with correct qty, PI, price etc.
   • => ASI displayed are the ones which have isAttrDocumentRelevant=Y in Merkmal (Bio, CH, AdR, Aktion, Karotten-ID)

5. Open a sales order, select one that includes:

   • different products
   • different ASI (e.g. Bio, CH, Inland, AdR, Aktion)

6. Press print preview

   • => print preview opens in ~10s or less

7. Check the order and its lines

   • => each orderline is displayed with correct qty, PI, price etc.
   • => ASI displayed are the ones which have isAttrDocumentRelevant=Y in Merkmal (Bio, CH, AdR, Aktion)