Fixes for code review comments

cms/djangoapps/contentstore/features/advanced-settings.py

@@ -141,7 +141,8 @@ def create_entry(key, value):
 
 
 def delete_entry(index):
-    """ index is 0-based
+    """ 
+    Delete the nth entry where index is 0-based
     """
     css = '.delete-button'
     assert_true(world.browser.is_element_present_by_css(css, 5))

cms/djangoapps/contentstore/views.py

@@ -1263,11 +1263,11 @@ def course_advanced_updates(request, org, course, name):
     else:
         real_method = request.method
         
-    if request.method == 'GET':
+    if real_method == 'GET':
         return HttpResponse(json.dumps(CourseMetadata.fetch(location)), mimetype="application/json")
     elif real_method == 'DELETE':
         return HttpResponse(json.dumps(CourseMetadata.delete_key(location, json.loads(request.body))), mimetype="application/json")
-    elif request.method == 'POST':
+    elif real_method == 'POST' or real_method == 'PUT':
         # NOTE: request.POST is messed up because expect_json cloned_request.POST.copy() is creating a defective entry w/ the whole payload as the key
         return HttpResponse(json.dumps(CourseMetadata.update_from_json(location, json.loads(request.body))), mimetype="application/json")