Measurements collection is added for lesion table

Packages/lesiontracker/lib/getActiveTimepointID.js

@@ -0,0 +1,7 @@
+getActiveTimepointID = function (viewportElement) {
+    var contentId = Session.get("activeContentId");
+    var imageViewportElements = $("#"+contentId).find(".imageViewerViewport");
+    var index = $(imageViewportElements).index(viewportElement);
+
+    return contentId.toString() + index.toString();
+};