DDF-522  integrated saved_query persistence to Cassandra into OSGi container
DDF-527  removed client code from CassandraEmbeddedServer, it is no longer a service and only a server
DDF-579:  adjusted logging statements to more appropriate level
DDF-579: refactoring of Solr Server into platform
DDF-579: changed to persist notifications using PersistentStore API
DDF-579:  changed to use CQL vs. ECQL to support fields named id
DDF-579: updated notifications console commands for testing send and delete of notifications
DDF-579:  fixed comment
DDF-579:  changed id_txt field from uuid to text type