Setting Quota not updated in Admin section

After setting quotas on a workspace, the quota is not reflected on the admin tab.

Steps to repro after installing quota add on

1. Navigate to workspace
2. Set quota at workspace
3. Navigate to Admin - Quota/Statistics link

Result: page does not display quota
Expected result: Quota set at workspace should be reflected on page

https://docs.google.com/a/nuxeo.com/document/d/1HzjO2OrfwKkHBG5gExmMW9cWdyoGLgOcLvMVTvZ6fIE/edit?usp=sharing