feat: Created Course updates page (#581)

src/constants.js

@@ -1,7 +1,7 @@
 export const DATE_FORMAT = 'MM/dd/yyyy';
 export const TIME_FORMAT = 'HH:mm';
 export const DATE_TIME_FORMAT = 'YYYY-MM-DDTHH:mm:ss\\Z';
-export const FORMATTED_DATE_FORMAT = 'MMMM D, YYYY';
+export const COMMA_SEPARATED_DATE_FORMAT = 'MMMM D, YYYY';
 export const DEFAULT_EMPTY_WYSIWYG_VALUE = '<p>&nbsp;</p>';
 export const STATEFUL_BUTTON_STATES = {
   pending: 'pending',
@@ -17,3 +17,9 @@ export const BADGE_STATES = {
   danger: 'danger',
   secondary: 'secondary',
 };
+
+export const NOTIFICATION_MESSAGES = {
+  saving: 'Saving',
+  duplicating: 'Duplicating',
+  deleting: 'Deleting',
+};