GUI-406
removed all alerts, replaced with either Notify.failure() or invoking timed-out-modal as appropriate
fixed all cases where 403 was being checked to ensure use of timed-out-modal
fixed conn_error exception view to return exception raised by BaseView.handle_error()
GUI-409 fixed 2 typos
Merge pull request #485 from eucalyptus/GUI-409

GUI-409