ensure not to collapse revision-toc

lib/views/page.html

@@ -210,7 +210,7 @@
     {# formatted text #}
     <div class="tab-pane {% if not req.body.pageForm %}active{% endif %}" id="revision-body">
       <div class="revision-toc" id="revision-toc">
-        <a data-toggle="collapse" data-parent="#revision-toc" href="#revision-toc-content" class="revision-toc-head collapsed">{{ t('Table of Contents') }}</a>
+        <a data-toggle="collapse" data-parent="#revision-toc" href="#revision-toc-content" class="revision-toc-head">{{ t('Table of Contents') }}</a>
 
       </div>
       <div class="wiki" id="revision-body-content"></div>

resource/js/legacy/crowi.js

@@ -34,7 +34,7 @@ Crowi.revisionToc = function(contentId, tocId) {
   var $content = $(contentId || '#revision-body-content');
   var $tocId = $(tocId || '#revision-toc');
 
-  var $tocContent = $('<div id="revision-toc-content" class="revision-toc-content collapse"></div>');
+  var $tocContent = $('<div id="revision-toc-content" class="revision-toc-content collapse in"></div>');
   $tocId.append($tocContent);
 
   $('h1', $content).each(function(idx, elm) {