GUI-601: Prevent XSS attack vectors in tags by leveraging markupsafe.escape().  Build instance choices in Attach Volume to Instance dialog on volumes landing page and detail page via Angular rather than via unsafe element.html(…) approach
GUI-601: Apply markupsafe.escape to autoscaling tags also
Merge pull request #436 from eucalyptus/GUI-601

GUI-601: Prevent XSS attack vectors via tags