List adding has now a cancel button

client/components/swimlanes/swimlanes.jade

@@ -53,6 +53,7 @@ template(name="addListForm")
               autocomplete="off" autofocus)
             .edit-controls.clearfix
               button.primary.confirm(type="submit") {{_ 'save'}}
+              .fa.fa-times-thin.js-close-inlined-form
               unless currentBoard.isTemplatesBoard
                 unless currentBoard.isTemplateBoard
                   span.quiet