GUI-344
allow 'terminate' option to show even if instance is terminated. Verified termianted instance can be terminated, then it is removed from instance list.
also fixed some instance dialog cruft
GUI-344
reverted logic to display 'terminate' menu.
added 'remove from view' menu option
added code to issue xhr call to do extra terminate
attempt to refresh page after call
GUI-344
fixed terminate call for 'remove from view'
fixed page refresh which can be initiated by any page controller using .('refresh')
Merge pull request #473 from eucalyptus/GUI-344

Gui 344