VCS: Notify project wizard about config changes

... and have the project wizard update the available VCS.

Task-number: QTCREATORBUG-4423

src/plugins/subversion/subversionplugin.cpp

@@ -1203,6 +1203,7 @@ void SubversionPlugin::setSettings(const SubversionSettings &s)
         m_settings = s;
         if (QSettings *settings = Core::ICore::instance()->settings())
             m_settings.toSettings(settings);
+        subVersionControl()->emitConfigurationChanged();
     }
 }