[views] fix ecsvexport selector
introduced by e48e5a597ccc
Fix the view and make web/test/test_views.py pass again.
# -*- coding: utf-8 -*-
# copyright %(year)s %(author)s, all rights reserved.
# contact %(author-web-site)s -- mailto:%(author-email)s
#
%(long-license)s
"""%(distname)s specific hooks and operations"""