[Poll] Fixed ShowPoll route, moved Poll Entity, created NewPollForm

Entity was temporarily moved to src/Entity in order to load from DB, since it is yet no possible to do that from Plugin

plugins/Reply/Reply.php

@@ -42,6 +42,8 @@ class Reply extends Module
     public function onAddRoute($r)
     {
         $r->connect('note_reply', '/note/reply/{reply_to<\\d*>}', [self::class, 'replyController']);
+
+        return Event::next;
     }
 
     /**