EUCA-8357

Allow the dashboard to retrieve resource data when it's empty
Added a condition so that the dashboard fetch call will only be made for the resources needed by the launcher.
EUCA-8357
removed eucadata patch to pre-load resources,
added debounce of add events on sgroups and keypairs to prevent excessive re-renders with large lists
Merge pull request #245 from eucalyptus/EUCA-8357

EUCA-8357