better integration of notes, templates clean up

notes/managers.py

@@ -0,0 +1,9 @@
+from django.db.models import Manager
+
+class NoteManager(Manager):
+
+    def by_date(self):
+        return self.get_queryset().order_by('created_date')
+
+    def by_time(self):
+        return self.get_queryset().order_by('created_time')