fix typo in facet search; add facet title vocabulary factory for review_state

facets.py uses names extracted from the query (for the facet.field parameter) to determine a named utility for looking up the term to use for an items portal_type. However there's a typo in configure.zcml which leads to the default IFacetTitleVocabularyFactory being looked up instead of the correct factory for the portal_type. As a result, you will see the type name instead of the title.

I have also added a named utility for looking up review_state translations.
[replacement for issue #24]