Minor fixes to cms

* make logging work properly in cms, dev
* fix a comment

cms/djangoapps/contentstore/views.py

@@ -176,7 +176,7 @@ def load_preview_state(request, preview_id, location):
 
 def save_preview_state(request, preview_id, location, instance_state, shared_state):
     """
-    Load the state of a preview module to the request
+    Save the state of a preview module to the request
 
     preview_id (str): An identifier specifying which preview this module is used for
     location: The Location of the module to dispatch to

cms/envs/dev.py

@@ -2,13 +2,18 @@
 This config file runs the simplest dev environment"""
 
 from .common import *
+from .logsettings import get_logger_config
 
 import logging
 import sys
-logging.basicConfig(stream=sys.stdout, )
 
 DEBUG = True
 TEMPLATE_DEBUG = DEBUG
+LOGGING = get_logger_config(ENV_ROOT / "log",
+                            logging_env="dev",
+                            tracking_filename="tracking.log",
+                            debug=True)
+
 
 MODULESTORE = {
     'default': {

cms/envs/logsettings.py

@@ -33,6 +33,7 @@ def get_logger_config(log_dir,
 
     return {
         'version': 1,
+        'disable_existing_loggers': False,
         'formatters' : {
             'standard' : {
                 'format' : '%(asctime)s %(levelname)s %(process)d [%(name)s] %(filename)s:%(lineno)d - %(message)s',