master
Update zxing.appspot.com app to work with latest GCloud SDK
Crush PNGs
Fix up .gitignore to ignore generated dirs, and remove generated dirs from git
Revamp zxing.appspot.com to use maven-gwt-plugin and its conventions
Update plugins; use https:// URLs consistently for good practice
Make compile warnings into errors; update some plugins; use https in web based generator
Update jQuery in a mobile web page and add integrity check, just to be sure
Crush some PNGs that could benefit from it
