Add new course dates fragment.

Also add it to the course home page.

common/djangoapps/track/views/__init__.py

@@ -107,7 +107,7 @@ def server_track(request, event_type, event, page=None):
         "event": event,
         "agent": _get_request_header(request, 'HTTP_USER_AGENT').decode('latin1'),
         "page": page,
-        "time": datetime.datetime.utcnow(),
+        "time": datetime.datetime.utcnow().replace(tzinfo=pytz.utc),
         "host": _get_request_header(request, 'SERVER_NAME'),
         "context": eventtracker.get_tracker().resolve_context(),
     }
@@ -155,7 +155,7 @@ def task_track(request_info, task_info, event_type, event, page=None):
             "event": full_event,
             "agent": request_info.get('agent', 'unknown'),
             "page": page,
-            "time": datetime.datetime.utcnow(),
+            "time": datetime.datetime.utcnow().replace(tzinfo=pytz.utc),
             "host": request_info.get('host', 'unknown'),
             "context": eventtracker.get_tracker().resolve_context(),
         }