display a clear notice that we can't reset passwords

customize.dist/pages/login.js

@@ -41,6 +41,11 @@ define([
                     ]),
                     h('div.col-md-3')
                 ]),
+                h('div.row', [
+                    h('div.col-md-3'),
+                    h('div.col-md-6', Msg.register_warning_note,),
+                    h('div.col-md-3'),
+                ]),
             ]),
             Pages.infopageFooter(),
         ])];