This is the release we showed off at Google I/O
- Adds 'Offline Mode' in the Settings pane for full content caching via the Firebase REST API
- Adds support for Universal Rendering of the application shell
- Adds fixes for the overlapping Settings menu issues we saw on Android and iOS
- Refreshes the build pipeline to better cater for universal rendering + Service Worker
- Adds Google App Engine config so we can now deploy our Node builds there