Fixed adding replies to posts in thread

boards/static/js/main.js

@@ -31,7 +31,5 b''
 
     addImgPreview();
 
-    addMarkPanel();
-
     addRefLinkPreview();
 });

boards/static/js/thread.js

@@ -63,10 +63,10 b' function moveCaretToEnd(el) {'
 
 function addQuickReply(postId) {
     var textToAdd = '>>' + postId + '\n\n';
-    var textAreaId = '#id_text';
+    var textAreaId = 'textarea';
     $(textAreaId).val($(textAreaId).val()+ textToAdd);
 
-    var textarea = document.getElementById('id_text');
+    var textarea = document.getElementsByTagName('textarea')[0];
     $(textAreaId).focus();
     moveCaretToEnd(textarea);