Disable kfill when attempting to recognize the barcodes

After much searching, this appears to be the culprit that prevents zbar from being able to recognize the QRCODE.  Not sure if we want to disable this completely or lower the _'threshold'?_

https://trello.com/c/LoGDLdEU/1141-handle-error-when-page-cannot-be-recognized-but-can-be-identified
@3dna/people