refs #768, authentication component improved

* access to user object
* show database name in UI
* init UI with user object at startup

src/blackcore/db/databaseauthentication.cpp

@@ -50,6 +50,17 @@ namespace BlackCore
             this->logoff();
         }
 
+        CAuthenticatedUser CDatabaseAuthenticationService::getDbUser() const
+        {
+            return this->m_swiftDbUser.get();
+        }
+
+        bool CDatabaseAuthenticationService::isUserAuthenticated() const
+        {
+            const CAuthenticatedUser user(this->getDbUser());
+            return user.isAuthenticated();
+        }
+
         CStatusMessageList CDatabaseAuthenticationService::login(const QString &username, const QString &password)
         {
             CStatusMessageList msgs;