Added 1 hour JavaScript keys. Imporved antispam for custom forms.

git-svn-id: https://plugins.svn.wordpress.org/cleantalk-spam-protect/trunk@1000377 b8457f37-d9ea-0310-8a92-e5e31aec5664
sender_info fix in ct_contact_form_validate().

git-svn-id: https://plugins.svn.wordpress.org/cleantalk-spam-protect/trunk@1000378 b8457f37-d9ea-0310-8a92-e5e31aec5664