Fix nginx sites file permissions

Author: jessuppi

bash/ss-perms-nginx-config.txt

@@ -90,9 +90,8 @@ chmod 0755 /var/www/cache/nginx ## 0755 seems enough
 chmod 0775 /var/www/html ## must be 0775 (0755 not enough)
 chmod 0775 /var/www/logs ## 0755 should also work
 chmod 0755 /var/www/meta ## must be 0755
-ss_chmod 0755 /var/www/sites ## must be 0755
-ss_chmod 0755 /var/www/sites/includes ## must be 0755
-ss_chmod 0755 /var/www/sites/error_pages ## must be 0755
+find /var/www/sites -type d -print0 | xargs -0 chmod 0755
+find /var/www/sites -type f -print0 | xargs -0 chmod 0644
 
 ## chmod files ##
 ss_chmod 0640 /var/www/meta/.htpasswd ## must be 0640