Asset locking feature.

CHANGELOG.rst

@@ -7,6 +7,8 @@ the top.  Include a label indicating the component affected.
 
 LMS: Add split testing functionality for internal use.
 
+Studio and LMS: add ability to lock assets (cannot be viewed unless registered for class).
+
 LMS: Improved accessibility of parts of forum navigation sidebar.
 
 LMS: enhanced accessibility labeling and aria support for the discussion forum new post dropdown as well as response and comment area labeling.

cms/djangoapps/contentstore/features/upload.feature

@@ -113,9 +113,6 @@ Feature: CMS.Upload Files
     @skip_safari
     Scenario: Unlocked assets can be viewed by anyone
         Given I have opened a course with a unlocked asset "unlocked.html"
-        Then the asset "unlocked.html" is viewable
-        And the user "bob" exists
-        And "bob" logs in
-        Then the asset "unlocked.html" is viewable
+        Then the asset "unlocked.html" can be clicked from the asset index
         And I log out
         Then the asset "unlocked.html" is viewable