#3395 fix the move left right redirect issue (#3417)

* Remove unused code and cleanup other compiler warnings

* #3395 add a mount for the grades page so that we can avoid a blank Location header being detected and some browsers going into an infinite redirect loop

gradebookng/tool/src/java/org/sakaiproject/gradebookng/GradebookNgApplication.java

@@ -28,7 +28,7 @@ public void init() {
 		super.init();
 
 		// page mounting for bookmarkable URLs
-		mountPage("/", GradebookPage.class);
+		mountPage("/grades", GradebookPage.class);
 		mountPage("/settings", SettingsPage.class);
 		mountPage("/importexport", ImportExportPage.class);
 		mountPage("/permissions", PermissionsPage.class);