added postgresql support
fixed - providerUserKey should match the one from provider's database
changed - do not allow async calls to database, as DataProvider needs access to context
added multiple forums on single database support (using schemas & custom DbProviderFactory)
added helpdesk authentication module (login into forum using helpdesk's cookie)
added Lucene index after tests cleanup
changed database after tests cleanup
added support for multiple Lucene indexes (one per helpdesk's forum)
updated App.config and Web.config so the app works correctly with Helpdesk
fixed - removed obsolete constructor call