annotator list title name contains "Source " prefix

frontend-js/src/main/js/gui/leftPanel/GuiUtils.js

@@ -180,9 +180,9 @@ function createGroupContainer(inline, annotatorClass, annotatorsClassMapping, gr
   if (groupAnnotations) {
     var annotatorName = automaticallyAnnotated ? annotatorsClassMapping[annotatorClass].getName() : "Annotated by curator";
     if (inline) {
-      descContainer.innerHTML = annotatorName + ': ';
+      descContainer.innerHTML = 'Source: ' + annotatorName + ': ';
     } else {
-      descContainer.innerHTML = annotatorName;
+      descContainer.innerHTML = 'Source: ' + annotatorName;
 
       if (automaticallyAnnotated) {
         var annotatorDescription = annotatorsClassMapping[annotatorClass].getDescription();