Offline functionality
Make it possible for users to store the eCMR offline, and still be able to share the eCMR (e.g. when there is no celullar network/internet connection)
- Add QR-Code on PDF (e.g. in the upper corner), in order to make eCMR sharable offline
- Add function to store the QR-Code offline (e.g. integration in Google/Apple Wallet)