Use identity-obj-proxy to get class names in snapshots.

Downgrade enzyme
Update snapshots
Remove tests which duplicate snapshot functionality

* Upgrade pubsweet, pubsweet-client and pubsweet-server
* Upgrade webpack etc
* Move to separate client config

* Import from react-router-dom
* Use withRouter
* Remove react-router-redux
* Replace AuthenticatedPage with PrivateRoute

Styling dashboard

See merge request !18

Styles for the dashboard. Would be better to have a `idle` class for the icon for example.