Progressive Web App (PWA)

[x] implement caching to enable offline functionality
[x] update data when a new version is released
[x] enhance CI/CD pipeline to support PWA deployment
[x] check the ability to install different versions (dev/test) on the same device
[x] implement web push notification
- users, groups, tags
[x] launching navigation apps relying on phonegap.plugin.launchnavigator
- we now rely on deep links/protocol handlers
[x] envs/workspaces clean up (SNS, cordova build)

kalisio / crisis