Allow passing data to iframes on gaggle_output.html. Here is how it works:
gaggle_output.js sends a custom event (including a namelist) to gaggle.js, which passes the data to the background.js. When the web handler page is opened, the corresponding handler js is injected (see manifest.json) and will retrieve the data from background.js, and inserts into its DOM elements.
Merge branch 'master' of https://github.com/baliga-lab/ChromeGoose