Add a config option to whitelist users registration

Through whole email or domain email

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

js/src/utils/errors.ts

@@ -48,6 +48,11 @@ export const errors: IError[] = [
     value: i18n.t("The current identity doesn't have any permission on this event. You should probably change it.") as string,
     suggestRefresh: false,
   },
+  {
+    match: /Your email is not on the whitelist$/,
+    value: i18n.t("Your email is not whitelisted, you can't register.") as string,
+    suggestRefresh: false,
+  },
   {
     match: /Cannot remove the last identity of a user/,
     value: i18n.t("You can't remove your last identity.") as string,