Lead storage updates and list sorting from form completions

git-svn-id: https://plugins.svn.wordpress.org/landing-pages/trunk@861321 b8457f37-d9ea-0310-8a92-e5e31aec5664
lp_id legacy

git-svn-id: https://plugins.svn.wordpress.org/landing-pages/trunk@862620 b8457f37-d9ea-0310-8a92-e5e31aec5664