fix #234: DOMs that has `.alert-info` class don't be displayed

lib/views/page.html

@@ -164,7 +164,7 @@
   </div>
   {% endif %}
   {% if req.query.unlinked %}
-  <div class="alert alert-info">
+  <div class="alert alert-info alert-unlinked">
     <strong>{{ t('Unlinked') }}: </strong> {{ t('page_page.notice.unlinked') }}
   </div>
   {% endif %}

resource/css/_form.scss

@@ -31,7 +31,8 @@
     right: 0;
     margin-top: 4px;
 
-    .alert-info {
+    .alert-info.alert-moved,
+    .alert-info.alert-unlinked {
       display: none;
     }
 

resource/css/_page.scss

@@ -125,7 +125,7 @@
 
       // alert component settings for trash page and moved page
       // see: https://jsfiddle.net/me420sky/2/
-      .alert-trash, .alert-moved {
+      .alert-trash, .alert-moved, .alert-unlinked {
         padding: 10px 15px;
 
         span {