overlay wrapping is disabled for Markers and data overlays

CHANGELOG

 minerva (12.1.4) stable; urgency=medium
+  * Bug fix: there are no more extra markers due to map wrapping
   * Bug fix: upload of the project failed when another project was removed 
     during upload 
 

frontend-js/src/main/js/map/canvas/OpenLayers/OpenLayerCanvas.js

@@ -26,24 +26,28 @@ function OpenLayerCanvas(element, options) {
 
   self._markerLayer = new ol.layer.Vector({
     source: new ol.source.Vector({
+      wrapX: false,
       features: []
     })
   });
 
   self._rectangleLayer = new ol.layer.Vector({
     source: new ol.source.Vector({
+      wrapX: false,
       features: []
     })
   });
 
   self._polylineLayer = new ol.layer.Vector({
     source: new ol.source.Vector({
+      wrapX: false,
       features: []
     })
   });
 
   self._drawingLayer = new ol.layer.Vector({
     source: new ol.source.Vector({
+      wrapX: false,
       features: []
     }),
     style: new ol.style.Style({