Make the number of frames on screen setting actually change the display
Merge branch 'master' into ticket-14
qrlib: remove most of the whitespace surrounding the QR codes.

If there is too little whitespace around the generated QR codes, the
ZXing decoder will have trouble with detection of QR codes in an image.
Label each QR code whenever there are multiple codes on the screen.

Rather than require the transmitter to decode a QR code to access the
chunkId and totalChunks to show on the UI, store the information in
the BitmapImage.  Also, allow toggling of labels below/above QR codes
for team to assess what is better.
Permit toggling of background between white and colors for debugging.
Start transmitter as many qr codes as user prefers to display.
Also ensures that we do not just display the same QR code n times.
Merge branch 'master' into ticket-14
Merge branch 'master' into ticket-14
Allow user to toggle displaying of QR code chunk labels.

This closes issue #74 (allow user to configure displaying of chunk labels).
remove background color used to debug layout
Access labels and QR codes within LinearLayout to simplify handling of rows
merge with ticket-14
moved the onTouch handlers into the respective fragments