Include the authorization query in every search an not only for faceted navigation

If REPO-14 has been solved, we should be quite easily able to include the authorization query into every query. Then there are still two important things we need to try to add:

1) Try to include the authorization query as a cached bitset
2) Try to short circuit the 'getSize' in jackrabbit to directly return the size without doing authorization per node. This way, we can count correctly very fast. Note that the final actual retrievable of the node will still be authorized, which is fine