Now that we've fixed the issues users had with the new barcode scanning:

• No pause after a successful scan
• Landscape mode to increase size of scanning area

The aim with this story is to finish this piece of work and display the scanned barcode image in the form for visual confirmation.

This preview should still be shown when navigating away and then back to the question, and if the form is opened again for editing. I should also be shown the hierarchy.

Notes

However we end up grabbing the image from the camera, we'll need to save it on disk somewhere and have a way of referencing it based on the instance and the question. We'll also want to make sure we delete the image when the instance is deleted, so space used up for these images doesn't grow infinitely.