Update en.i18n.json

imports/i18n/data/en.i18n.json

@@ -1087,6 +1087,8 @@
   "label-names": "Label Names",
   "archived-at": "archived at",
   "sort-cards": "Sort Cards",
+  "sort-is-on": "Sort is on",
+  "remove-sort": "Remove Sort",
   "cardsSortPopup-title": "Sort Cards",
   "due-date": "Due Date",
   "server-error": "Server Error",