(fix) don't offer forward/vacation options in filters if not enabled

UI/PreferencesUI/UIxPreferences.h

@@ -1,6 +1,6 @@
 /* UIxPreferences.h - this file is part of SOGo
  *
- * Copyright (C) 2007-2015 Inverse inc.
+ * Copyright (C) 2007-2016 Inverse inc.
  *
  * This file is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -51,12 +51,10 @@
   NSMutableDictionary *vacationOptions, *forwardOptions;
 
   BOOL mailCustomFromEnabled;
+  BOOL forwardEnabled;
   BOOL hasChanged;
-
-  
 }
 
-//- (NSString *) userLongDateFormat;
 - (BOOL) _isSieveServerAvailable;
 - (id) _sieveClient;