[WIP] Shadow pages

This is actually a good illustration of why we need to refactor :)

This is work in progress, will add load and then work on the UI in ContentBundle
I removed this method so that I could inspect the contents of the repository after the test execution.

It is, as far as I can tell, unnecessary anyway as the repository is also purged when setting up the repository. So this was maybe done twice... in anycase we should purge the DB when starting tests, not after finishing them I think.