IPsec Widget allow for old settings that have no iketype

as mentioned in https://forum.pfsense.org/index.php?topic=84527.msg471919#msg471919
This change makes it work like similar if tests in /usr/local/wwwvpn_ipsec.php, and code in /etc/inc/vpn.inc that effectively defaults to ikev1 when iketype is not specified.
This should make the code here be executed and make $ikeid get the correct value to be used in later code.
Allow for old settings that have no iketype

This bit of code looks like it could do with the same test as https://github.com/pfsense/pfsense/pull/1412
This is executed when the "Connect" button is pressed from Status->IPsec
Somebody with these problematic old IPsec entries could test this - with current code I suspect that disconnect followed by connect - it will not connect. With this change it will (might?) connect again.
Merge pull request #1413 from phil-davis/patch-3
Merge pull request #1412 from phil-davis/patch-2