only show extra msg in pro edition when unlink a device

seahub/templates/js/templates.html

@@ -1493,8 +1493,10 @@
 <script type="text/template" id="confirm-dialog-with-extra-option-tmpl">
     <h3><%= title %></h3>
     <p><%= content %></p>
+    <% if (is_pro) { %>
     <label class="checkbox-label">
         <input type="checkbox" name="confirm-extra-option" id="confirm-extra-option" class="vam" />
         <span class="checkbox-option vam"><%= extraOption %></span>
     </label>
+    <% } %>
 </script>

static/scripts/common.js

@@ -297,6 +297,7 @@ define([
             var $yesBtn = $('#confirm-yes');
 
             var html = this.confirm_with_extra_option_template({
+                'is_pro': app.pageOptions.is_pro,
                 'title': title,
                 'content': content,
                 'extraOption': extraOption