GitLab

In particular, BASE1 is always the URL of the tiop=lebel published object.
Note that when using ZPublisher, SCRIPT_NAME is '' and
BASE0 and BASE1 are the same.

Changed lookup of if URLx and BASEx to allow x to have multiple
digits.  So you can use URL999999 if your URL is ling enough. ;)

Added has_key and updated keys to work with new URL lookup mechansism.