BLD-530: Fix 500 error in transcripts.

cms/djangoapps/contentstore/features/transcripts.feature

@@ -641,6 +641,7 @@ Feature: Video Component Editor
 
         And I save changes
         Then when I view the video it does show the captions
+        And I see "好 各位同学" text in the captions
         And I edit the component
 
         And I open tab "Advanced"

cms/djangoapps/contentstore/features/transcripts.py

@@ -116,6 +116,7 @@ def i_see_status_message(_step, status):
     world.wait(DELAY)
     world.wait_for_ajax_complete()
 
+    assert not world.css_visible(SELECTORS['error_bar'])
     assert world.css_has_text(SELECTORS['status_bar'], STATUSES[status.strip()])
 
 

cms/djangoapps/contentstore/views/component.py

@@ -249,9 +249,12 @@ def edit_unit(request, location):
         )
 
     components = [
-        loc_mapper().translate_location(
-            course.location.course_id, component.location, False, True
-        )
+        [
+            component.location.url(),
+            loc_mapper().translate_location(
+                course.location.course_id, component.location, False, True
+            )
+        ]
         for component
         in item.get_children()
     ]