Add default icon for editors sections with no icon defined.
Fix refreshing problems in Website structure view: cache object is now destroyed when leaving the view.
Merge branch 'Admin' of github.com:fredericbonjour/Change into Admin
Fix unwanted local copy creation before selecting a Document in another route.
Merge pull request #932 from fredericbonjour/Admin

Add default icon for editors sections and fix refreshing problems in Website structure view.