Set isProduction=false in eventPage.js
Need to disable web security for extension due to CORS using command:
/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --disable-web-security --user-data-dir=~/Projects/collated-chrome-extension
Chrome extension ID may change in development and needs to be set in Ember at app/extension-link/service.js
Clear browser cache after changing ID