Logging / s2Member® Security Badges

* Logging must now be disabled (and the logs directory must be non-existent or empty) for an s2Member® Security Badge to go green. There is only one way to bypass this security check. See KB Article: [s2Member® Security Badges](http://www.s2member.com/kb/security-badges/). Notices are displayed on activation of this version to warn site owners about this change. See: WebSharks/Private#69