Logging & File %2F Issue

* Fixed bug reported in WebSharks/Private#73 related to `%2F` in file download URLs leading to a `ccap` directory.
* Logging now disabled by default. New log recommendation/warning notices updated throughout all menu pages for s2Member®. See: WebSharks/Private#69
* Log file entries are now better sanitized via regex patterns in new `ws_plugin__s2member_utils_logs` class member. See: WebSharks/Private#69