Reverse Proxy SSL Support / Security Improvements

Shell scripts and configuration files are currently copied into ht root folder and accessible via apache if this container is linked to the web. At the least this reveals system configuration information.

Added a line to wp-config.php that allows the instance to support reverse proxied ssl connections.
Ok, I see the logic (thanks for the explaining), but this will need to move up inside the `if` statement where we do the `rsync` or else we'll end up adding this if statement again to the end of `wp-config.php` every time we `docker restart` our container.

Also, I think it'll be much, much simpler to read and maintain if we do:
```bash
	cat >> wp-config.php <<'EOPHP'

// If we're behind a proxy server and using HTTPS, we need to alert Wordpress of that fact
// see also http://codex.wordpress.org/Administration_Over_SSL#Using_a_Reverse_Proxy
if (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https') {
	$_SERVER['HTTPS'] = 'on';
}
EOPHP