Fix creation of dynamic properties

Add some properties to classes to fix errors like:

Creation of dynamic property iSchedule::$body_cannon is deprecated in /usr/share/davical/inc/iSchedule.php on line 533
Creation of dynamic property FakeSession::$user_active is deprecated in /usr/share/davical/inc/iSchedule-POST.php on line 23

inc/iSchedule-POST.php

@@ -17,6 +17,32 @@ include_once('freebusy-functions.php');
 
 
 class FakeSession {
+  private $user_active;
+  private $created;
+  private $modified;
+  private $password;
+  private $fullname;
+  private $email_ok;
+  private $date_format_type;
+  private $locale;
+  private $type_id;
+  private $type_label;
+  private $displayname;
+  private $default_privileges;
+  private $is_principal;
+  private $is_calendar;
+  private $is_addressbook;
+  private $collection_id;
+  private $resourcetypes;
+  private $privileges;
+  private $username;
+  public $user_no;
+  public $principal_id;
+  private $logged_in;
+  private $email;
+  private $dav_name;
+  private $principal;
+
   function __construct($principal) {
     // Assign each field in the selected record to the object
     foreach( $principal AS $k => $v ) {

inc/iSchedule.php

@@ -33,8 +33,16 @@ class iSchedule
   private $failed = false;
   private $failOnError = true;
   private $subdomainsOK = true;
-  private $remote_public_key ;
+  private $remote_public_key;
-  private $remote_ssl ;
+  private $remote_ssl;
+  private $body_cannon;
+  private $header_cannon;
+  private $remote_server;
+  private $remote_selector;
+  private $signed_headers;
+  private $signed_length;
+  private $remote_user_rule;
+
   private $required_headers = Array ( 'host',  // draft 01 section 7.1 required headers
                                       'originator',
                                       'recipient',