include domtype to searcheventcache id 
to differenciate between local / global events for reuse of cached events 
fix for http://mantis.tokeek.de/view.php?id=493
use a LinkedHashMap for factes to maintain facet order as given by solr
do not cache search requests to Solr if the result is used for
doublechecking. If a double-check comes from cached results the
doublecheck fails.
added hints to ranking to make ranking boosts using vocabularies easier