Browser shows default list of bookmarks/history before logging in

The browser now allows the user to store its state, i.e. bookmarks and history list, on the network, therefore there is no local storage for it.
When opening the browser, a default list of bookmarks and history pages seems to be filled up even before logging in.
We should review this as we probably shouldn't have any default bookmarks, and the authenticator page could perhaps be filtered out from the history pages. There is also a history entry linking to `about:blank` which should be also filtered out.