display 'loading' when loading qr scanner
display 'loading' when loading qr scanner

blocktrail/blocktrail-wallet,blocktrail/blocktrail-wallet,blocktrail/blocktrail-wallet,blocktrail/blocktrail-wallet,blocktrail/blocktrail-wallet,blocktrail/blocktrail-wallet,blocktrail/blocktrail-wallet,blocktrail/blocktrail-wallet