actually, seems like if we remove it from PIPELINE_JS then it doesn't work in production

cms/envs/common.py

@@ -238,7 +238,8 @@ PIPELINE_JS = {
         ) + ['js/hesitate.js', 'js/base.js',
              'js/models/feedback.js', 'js/views/feedback.js',
              'js/models/section.js', 'js/views/section.js',
-             'js/models/metadata_model.js', 'js/views/metadata_editor_view.js'],
+             'js/models/metadata_model.js', 'js/views/metadata_editor_view.js',
+             'js/views/assets.js'],
         'output_filename': 'js/cms-application.js',
         'test_order': 0
     },

cms/templates/asset_index.html

@@ -8,7 +8,6 @@
 
 <%block name="jsextra">
 <script src="${static.url('js/vendor/mustache.js')}"></script>
-<script type="text/javascript" src="${static.url('js/views/assets.js')}"></script>
 
 <script type='text/javascript'>
   // we just want a singleton