new file:   public/img/lutim128.png
	modified:   templates/index.html.ep
	modified:   templates/layouts/default.html.ep
	new file:   templates/manifest.webapp.ep
Add icon 128px for openwebapp (firefox os)
Add accept="image/*" in the form for accept only images
Add JS for install openwebapp and share image to lutim app
Add manifest for openwebapp
Webapp development, trying to send the image

Image sending is ok, but for some unknown reason, we can't have status
message displayed once upload is complete.