fix checkuser page + add harem addition to invite page

lang/chs/lang_invite.php

@@ -48,6 +48,8 @@ $lang_invite = array
 	'std_only' => "只有",
 	'std_or_above_can_invite' => "及以上的用户才能发送邀请。",
 	'text_email_restriction_note' => "你只能发送邀请给以下邮箱：",
+
+    'harem_addition' => '后宫加成',
 );
 
 ?>

lang/cht/lang_invite.php

@@ -48,6 +48,7 @@ $lang_invite = array
 	'std_only' => "只有",
 	'std_or_above_can_invite' => "及以上的用戶才能發送邀請。",
 	'text_email_restriction_note' => "你只能發送邀請給以下郵箱：",
+    'harem_addition' => '後宮加成',
 );
 
 ?>

lang/en/lang_invite.php

@@ -51,6 +51,7 @@ Best Regards,
 	'std_only' => "Only ",
 	'std_or_above_can_invite' => " or above can send invitation.",
 	'text_email_restriction_note' => "You could only send invitation to email from those domains: ",
+    'harem_addition' => 'Harem addition',
 );
 
 ?>