We should notify the user if there is an available update for the marketplace and provide them a link to begin the installation.

Zamboni iframe part: https://github.com/mozilla/zamboni/commit/0691a429f7b0ab7f9555495073aec85821fb9c73

Fixed in https://github.com/mozilla/fireplace/commit/a5415d473190db727cdf2194c471bf09af7d2843

Note: to test this, you need to make sure that: 1) The package you are testing is installed from the correct origin. It can *not* be installed from WebIDE. 2) The manifest url is correct in the package you are testing. By default, on dev, it will be "https://marketplace-dev.allizom.org/packaged.webapp". But if you are testing with a custom-made package, you might need to set something different 3) There is an update available The easiest way to achieve all this is to: - Have iframe package for dev installed. Hopefully the preinstalled version comes with the right install origin (marketplace-dev.allizom.org) - Make sure there is a new iframe package available on *dev* - Launch your dev iframe package, it should prompt you to update You might need to have a rooted phone in order to whitelist -dev to be able to install.