#266: Use available space for address in send window.
Don't show parentheses if there is no label.
Use sheet to display app error.
Change feedback header string.
Clean up code.
This shall never be copied again.
Prevent images being scanned after the first success.
Rename API level to API version.
Replace QR icon with FontAwesome icon.
Add QR button to send window.
Align buttons in send window.
Create shared camera window (since multiple ones won't work).
Link QR button with camera window.
Hide QR button if not needed.
#177: Integrate QR scanning into send window.
Add barcode button to edit page.