Add some WIP changes to Lesion Tracker dialogs

Packages/lesiontracker/client/components/lesionTableTimepointCell/lesionTableTimepointCell.js

@@ -0,0 +1,13 @@
+Template.lesionTableTimepointCell.helpers({
+    'longestDiameter': function() {
+        // Search Measurements by lesion and timepoint
+        var lesionData = Template.parentData(1);
+        if (!lesionData ||
+            !lesionData.timepoints ||
+            !lesionData.timepoints[this.timepointID]) {
+            return;
+        }
+
+        return lesionData.timepoints[this.timepointID].longestDiameter;
+    }
+});