Use indexOnSave consistently
Don't index objects after relations deletion, fixes #4527
Hide physical storage according to the settings
Hide siblings also for top-level nodes
Update error.html page
Upgrade Symfony to v1.4.20
Avoid caching less files in Trillium
Fix some issues showing siblings in the treeview
Fix a problem in the ACL drafts filter
Upgrade viewDraft check to use slugs, fixes #3306
Add missing semicolon
Filter drafts in the imageflow, fixes #3887