Major number of minor cleanups. Fixed from e-mail, import order, ==None, etc.

courseware/modules/vertical_module.py

@@ -1,12 +1,12 @@
-from x_module import XModule
-from lxml import etree
-
 import json
 
 ## TODO: Abstract out from Django
 from django.conf import settings
 from djangomako.shortcuts import render_to_response, render_to_string
 
+from x_module import XModule
+from lxml import etree
+
 class VerticalModule(XModule):
     id_attribute = 'id'