add qrcode enketo
Merge branch 'master' into qrcode
added elaphe
test with dev initialised
test with dev initialised
barcode to be generated on fly
Merge branch 'qrcode' of github.com:modilabs/formhub into qrcode

Conflicts:
	utils/viewer_tools.py
fix popup
format modal size
ormat modal size
Merge branch 'qrcode' of github.com:modilabs/formhub into qrcode

Conflicts:
	main/views.py
add qrcode on forms info
modify button
align center
remove earlier template tag
Validate form and user before generating qrcode
remove validate code first. taking too long.
pep8 clean
Merge pull request #965 from modilabs/qrcode

Qrcode