Scan QR codes to send via nostr

• show a qr code of the npub on the receiving page
• qr code scanner on the send page

Backup & Restore / minting tokens

• add option to backup and restore tokens and mints in nutstash
• improved UI when minting
• minting is now more stable, allowing user to return to pending mint after invoice has been paid

First version

0.1.2

version 0.1.2