Don't default to publishing http: alias!

It seems to have caused a problem with at least an older codebase of
remote GNU social sites, but either way we shouldn't present the user
as aliased on an insecure connection if there is no real reason to.

plugins/WebFinger/WebFingerPlugin.php

@@ -31,7 +31,7 @@ if (!defined('GNUSOCIAL')) { exit(1); }
 
 class WebFingerPlugin extends Plugin
 {
-    public $http_alias = true;
+    public $http_alias = false;
 
     public function initialize()
     {