parseURI regex update

Usernames or passwords should not be allowed to contain slashes.
[Spec ref](https://tools.ietf.org/html/rfc3986#section-3.2.1): userinfo is of type: `unreserved` / `pct-encoded` / `sub-delims` / ":" which doesn't include "`/`".

This breaks systemJS when loading a page with the following URL:
`https://service.domain.com/go?email=jim@jam.com`.