Add responsive design to new group tables to ensure they render properly on very narrow screens. (#1137)

Signed-off-by: DL6ER <dl6er@dl6er.de>

Co-authored-by: Dan Schaper <dan@glacialmagma.com>

scripts/pi-hole/js/groups.js

@@ -144,6 +144,10 @@ $(document).ready(function() {
         $("td:eq(3)", row).html(button);
       }
     },
+    dom:
+      "<'row'<'col-sm-4'l><'col-sm-8'f>>" +
+      "<'row'<'col-sm-12'<'table-responsive'tr>>>" +
+      "<'row'<'col-sm-5'i><'col-sm-7'p>>",
     lengthMenu: [
       [10, 25, 50, 100, -1],
       [10, 25, 50, 100, "All"]