Handle String Customer IDs when calling ciSubfunctionUrl()

[Pauldro]

I'm submitting a ...

[x] Bug Report

[ ] Feature Request

[ ] Code Review Issue

Current behavior (Include Images if available):
If ciSubfunctionUrl() is called with a string Customer ID it will cause a fatal error

Expected behavior:
Have it call the parent viUrl() to handle string Customer IDs

Steps to reproduce:

Related code:

dplus/site/templates/controllers/classes/mci/Ci/AbstractController.php

Line 144 in 600d52a

public static function ciSubfunctionUrl(int $rID, $sub) {