nodogsplash: Release 4.0.0 (#484)

nodogsplash: Release 4.0.0 (#484)

Maintainer: Moritz Warning <moritzwarning@web.de>

Compiled and tested on snapshot SDK mips_24kc and arm_cortex-a5_neon-vfpv4/

  * Introduce aes encryption of the query string passed to remote FAS, allowing authdir and client token to be transferred securely. Uses php-cli and php-openssl. These are required if encryption is enabled but are not dependencies [bluewavenet]
  * Introduce fasremotefqdn, specifying the FQDN of the remote FAS. This facilitates simplified support for FAS operation on shared hosting systems [bluewavenet]
  * Add a FAS php script supporting aes encrypted query string sent from NDS [bluewavenet]
  * Numerous Documentation updates [bluewavenet]
  * Remove unused pagesdir and imagesdir [mwarning]
  * Add Preauth script that displays images from remote servers [bluewavenet]
  * Use elegant check for valid ip addresses [mwarning]
  * openwrt initscript - add missing macmechanism in the config file [lynxis]

Signed-off-by: Rob White <rob@blue-wave.net>