Fix saved and shared searchs

Steps to reproduce:

• User1 create a search and save it
• Give rights to user2 on it
  => User2 can see the search in the drop down list but nothing happens when User2 clicks on it.
• Clear searchs and go back to faceted search
• User1 click on the saved search
  => Nothing happens when he clicks on it.

Workaround:

• Clicking on the Refresh icon makes it work but the aggregates are still not filled in.