Work on refactoring measurements out of Lesion Tracker package

- Removed AssociatedStudies Collection
- Measurement API is generated from configuration files
- Data exchange methods are defined in configuration

LesionTracker/client/components/viewerSection/viewerSection.js

@@ -0,0 +1,19 @@
+Template.viewerSection.events({
+    'transitionend .sidebarMenu'(event) {
+        if (!event.target.classList.contains('sidebarMenu')) {
+            return;
+        }
+
+        handleResize();
+    }
+});
+
+Template.viewerSection.helpers({
+    leftSidebarOpen() {
+        return Template.instance().data.state.get('leftSidebar');
+    },
+
+    rightSidebarOpen() {
+        return Template.instance().data.state.get('rightSidebar');
+    }
+});