Address final review comments by Braden.

problem_builder/public/js/data_export.js

@@ -50,7 +50,7 @@ function DataExportBlock(runtime, element) {
                     'A report is available for download.'
                 ));
                 $statusArea.append($('<p>').text(
-                    'It was created at ' + startTime.toUTCString() +
+                    'It was created at ' + startTime.toString() +
                     ' and took ' + status.last_export_result.generation_time_s.toFixed(1) +
                     ' seconds to finish.'
                 ));

problem_builder/tasks.py

 """
-This file contains celery tasks for contentstore views
+Celery task for CSV student answer export.
 """
 import time
 
@@ -18,7 +18,7 @@ logger = get_task_logger(__name__)
 @task()
 def export_data(source_block_id_str, user_id):
     """
-    Reruns a course in a new celery task.
+    Exports student answers to all MCQ questions to a CSV file.
     """
     start_timestamp = time.time()
 

problem_builder/tests/integration/test_data_export.py

@@ -24,7 +24,7 @@ class MockTasksModule(object):
                 error=None,
                 report_filename='/file/report.csv',
                 start_timestamp=time.time(),
-                generation_time_s = 23.4,
+                generation_time_s=23.4,
             )
         else:
             async_result.result = 'error'