Add customer_account_logout to default refresh actions

[dantaeusb]

Lazy caching often based on customer's authentication status, so I think adding customer_account_logout action to refresh lazy block by default will be useful.

Also I think it would be great to notice about naming of lazy_blocks, I'm not sure but I faced the issue when block alias does not work in list, only original block name. Maybe create a new issue if somebody faced this problem too?