added "close" button to the default controls

Author: Cerem Cem ASLAN

components/data-table/controls.pug

@@ -9,3 +9,5 @@
             on-click="@.set('editable', true)"
             class-orange="editable"
             ): icon.write
+
+        btn.inverted.red.icon(on-click="closeRow" tooltip="Close"): icon.remove