Merge pull request #460 in ZP/z-push from bugfix/ZP-1131-lighttpd-autodiscovery-config to develop

* commit 'b10e9353':
  ZP-1131 Autodiscovery config for Lighttpd

config/lighttpd/z-push-autodiscover.conf

+# Z-Push AutoDiscover - ActiveSync over-the-air - default Lighttpd configuration
+server.modules += ("mod_rewrite")
+url.rewrite-once = ( "(?i)^/autodiscover/autodiscover\.xml.*" => "/Autodiscover/Autodiscover.xml" )
+alias.url += (
+    "/Autodiscover/Autodiscover.xml" => "/usr/share/z-push/autodiscover/autodiscover.php"
+)