(RTM-882) Fetch purchase history for member in the background - technical release notes

Information such as bonuses or purchase history is fetched later, which significantly speeds up member opening.
This user will experience as a time improvement regarding opening member information. 

(RTM-8954) Updating member 

Members can be updated and saved if loyalty system allows this. 

(RTM-2740) Send digital receipts

Ensured digital receipts are sent even if no member is added to the receipt.