change a duplicate modal size

src/server/views/modal/duplicate.html

@@ -1,5 +1,5 @@
   <div class="modal" id="duplicatePage">
-    <div class="modal-dialog">
+    <div class="modal-dialog modal-lg">
       <div class="modal-content">
 
       <form role="form" id="duplicatePageForm" onsubmit="return false;">