Issue/2000 automatically update gui (#3289)

* Make it possible to query a propertyowner by uri with the getpropertytopic

* Remove automatic reloading of ui from drag and drop script

* Add function for uri for propertyowners

* Add uri to the to_json for the propertyowner

* Add comment for the propertyOwner function and update the comment for the property function to clearer distinguish between uris and identifiers

* Go back to the old events but with uris instead as their member

* Apply feedback from PR

* Address PR comments

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Co-authored-by: Ylva Selling <ylva.selling@liu.se>

modules/globebrowsing/src/layergroup.cpp

@@ -168,20 +168,11 @@ Layer* LayerGroup::addLayer(const ghoul::Dictionary& layerDict) {
     // initialize function. This means that the layerManager does not exists yet, and
     // we cannot find which SGN it belongs to... Want to avoid doing this check, so
     // this should be fixed (probably as part of a cleanup/rewite of the LayerManager)
-    if (!layerManager) {
-        global::eventEngine->publishEvent<events::EventLayerAdded>(
-            "", // we don't know this yet
-            layerGroup->identifier(),
-            ptr->identifier()
-        );
-    }
-    else {
+    if (layerManager) {
         properties::PropertyOwner* globe = layerManager->owner();
         properties::PropertyOwner* sceneGraphNode = globe->owner();
         global::eventEngine->publishEvent<events::EventLayerAdded>(
-            sceneGraphNode->identifier(),
-            layerGroup->identifier(),
-            ptr->identifier()
+            ptr->uri()
         );
     }
 
@@ -203,9 +194,7 @@ void LayerGroup::deleteLayer(const std::string& layerName) {
             properties::PropertyOwner* globe = layerManager->owner();
             properties::PropertyOwner* sceneGraphNode = globe->owner();
             global::eventEngine->publishEvent<events::EventLayerRemoved>(
-                sceneGraphNode->identifier(),
-                layerGroup->identifier(),
-                it->get()->identifier()
+                it->get()->uri()
             );
             // We need to keep the name of the layer since we only get it as a reference
             // and the name needs to survive the deletion