feat(graasp-import): add a graasp file import error message (#580)

Author: MatveyK

src/constants/messages.ts

@@ -136,6 +136,7 @@ export const FAILURE_MESSAGES = {
     'CANNOT_ENROLL_FROZEN_ITEM_LOGIN_SCHEMA',
   NOT_MEMBER_OR_GUEST: 'NOT_MEMBER_OR_GUEST',
   ITEM_TAG_ALREADY_EXISTS: 'ITEM_TAG_ALREADY_EXISTS',
+  GRAASP_EXPORT_FILE_ERROR: 'GRAASP_EXPORT_FILE_ERROR',
 };
 
 export const DEFAULT_FAILURE_MESSAGE = FAILURE_MESSAGES.UNEXPECTED_ERROR;

src/langs/en/messages.json

@@ -157,5 +157,6 @@
   "NOT_MEMBER_OR_GUEST": "Your account is not registered as member or pseudonimized user",
   "INVALID_ITEM_NAME_PATTERN_ERROR": "The item's name is not valid. It should start and end with an alphabetical character.",
   "INVALID_ITEM_NAME_MAX_LENGTH_ERROR": "The item's name is too long.",
-  "ITEM_TAG_ALREADY_EXISTS": "This tag is already associated with this item."
+  "ITEM_TAG_ALREADY_EXISTS": "This tag is already associated with this item.",
+  "GRAASP_EXPORT_FILE_ERROR": "An error was encounterd in the provided GRAASP export file."
 }