GUI-197: Allow Elastic IPs to be allocated from IP Addresses landing page, leveraging a Foundation modal dialog with Foundation Abide form validation.  Implement cross-request notifications via Pyramid’s flash messaging framework.
GUI-197: Allow Elastic IPs to be associated with or disassociated from an instance.  Also allow IP to be released to cloud.
GUI-197: Convert instance selector into autocomplete-like Chosen select widget.  Add license for Harvest Chosen plugin.
Minor style tweak for single Elastic IP page.
Merge pull request #14 from eucalyptus/GUI-197

GUI-197: Read/write operations for Elastic IPs.