QR Code Fix & Grammar Correction

Two issues solved.
https://github.com/sahana/vesuvius/issues/30 and https://github.com/sahana/vesuvius/issues/14

Also, do you want this merged? https://github.com/Akshay2598/Vesuvius/commit/86e2b15fa4c4ef3d84fc6e177a171d29072c26a9