brush up tag button

resource/locales/en-US/translation.json

@@ -11,6 +11,7 @@
   "Cancel": "Cancel",
   "Create": "Create",
   "Admin": "Admin",
+  "Tags": "Tags",
   "New": "New",
   "Shortcuts": "Shortcuts",
   "eg": "e.g.",

resource/locales/ja/translation.json

@@ -11,6 +11,7 @@
   "Cancel": "キャンセル",
   "Create": "作成",
   "Admin": "管理",
+  "Tags": "タグ",
   "New": "作成",
   "Shortcuts": "ショートカット",
   "eg": "例:",

src/server/views/layout/layout.html

@@ -153,9 +153,11 @@
           </a>
         </li>
         <li>
-          <a href="/tags">
-            <i class="fa fa-tags"></i>Tags
-          </a>
+          <li class="nav-item-admin">
+            <a href="/tags">
+              <i class="tag-icon icon-tag"></i><span>{{ t('Tags') }}</span>
+            </a>
+          </li>
         </li>
         <li>
           {% if searchConfigured() %}