Fix integrity errors

cms/djangoapps/contentstore/management/commands/migrate_transcripts.py

@@ -144,7 +144,8 @@ class Command(BaseCommand):
         )
 
         if commit and options.get('from_settings') and migration_settings.all_courses:
-            MigrationEnqueuedCourse.objects.bulk_create([
-                MigrationEnqueuedCourse(course_id=course_key, command_run=command_run)
-                for course_key in course_keys
-            ])
+            for course_key in course_keys:
+                enqueued_course, created = MigrationEnqueuedCourse.objects.get_or_create(course_id=course_key)
+                if created:
+                    enqueued_course.command_run = command_run
+                    enqueued_course.save()

cms/djangoapps/contentstore/views/videos.py

@@ -194,7 +194,7 @@ def validate_video_image(image_file):
     Arguments:
         image_file: The selected image file.
 
-   Returns:
+    Returns:
         error (String or None): If there is error returns error message otherwise None.
     """
     error = None