comment out transparent background color as long as it does not work as desired
increase performance for noPolygons rendering
Handled roundabouts for the pedestrian mode

Previously, the Estonian TTS said "sõitke ringristmikule" meaning
"ride/drive to the roundabout". This was incorrect for the pedestrian mode.
Now it says "kõndige" ("walk") instead of "sõitke", if the appMode is
'pedestrian'. For other modes the saying is unchanged.