Fixed thread OP id in thread view. Fixed reply count in thread view

boards/static/js/thread_update.js

@@ -119,7 +119,7 b' function initAutoupdate() {'
 }
 
 function getReplyCount() {
-    return $('.thread').children('.post').length - 1 
+    return $('.thread').children('.post').length
 }
 
 function getImageCount() {

boards/templates/boards/thread.html

@@ -95,7 +95,7 b''
     <form id="form" enctype="multipart/form-data" method="post"
             >{% csrf_token %}
         <div class="post-form-w">
-        <div class="form-title">{% trans "Reply to thread" %} #{{ posts.0.id }}</div>
+        <div class="form-title">{% trans "Reply to thread" %} #{{ thread.get_opening_post.id }}</div>
             <div class="post-form">
                 <div class="form-row">
                     <div class="form-label">{% trans 'Title' %}</div>