Don't allow replying to one's self

When posting a reply-message, if the original "from" field is the
current user's alias, then reply to the original message's "to"
value instead of the "from" value. This is also how sbbs handles
reply 'to' fields.

web/lib/forum.js

@@ -533,7 +533,7 @@ function postReply(sub, body, pid) {
         msgBase.close();
         if (pHeader === null) return ret;
         var header = {
-            'to' : pHeader.from,
+            'to' : pHeader.from == user.alias ? pHeader.to : pHeader.from,
             'from' : user.alias,
             'subject' : pHeader.subject,
             'thread_id' : (