[Zope] add vhm, and cant browse/manage site

[Bak @ kedai]

>I recommend patching your BeforeTraverse.py as follows (lines 170->171):

  did as told, and here's what's in the log
       
ERROR(200) BeforeTraverse Error while calling 'SiteRoot'

i did a find, there's no SiteRoot, anywhere in the Data.fs/zodb

help