Add missing tr from sidebar table

app/assets/javascripts/repo/repo_sidebar.vue

@@ -72,6 +72,7 @@ export default RepoSidebar;
 <div id="sidebar" :class="{'sidebar-mini' : isMini}" v-cloak>
   <table class="table">
     <thead v-if="!isMini">
+      <tr>
         <th v-if="!isMini">
           Name
         </th>
@@ -84,6 +85,7 @@ export default RepoSidebar;
         <th class="hidden-xs" v-if="!isMini">
           Last Update
         </th>
+      </tr>
     </thead>
     <tbody>
       <repo-file-options