Restored error messages on my account.
Replaced h3+div with fieldsets on my account and user form.
Adds an icon to the change password link.
Fixed: private queries should not be accessible to other users (#8729).
Merged r6073 from trunk.
Merged r6126 from trunk.
Merged r6147 and r6149 from trunk.
Merged r6148 from trunk.
Merged r5991 from trunk.
Merged r5969 from trunk.