[dev] Datatree changes break giapeto

[Roel Gloudemans]

The update from 1.180 to 1.181 breaks giapeto.

 From giapeto/lib/Giapeto.php
getUrlCategoryId tries to do a getId with the result from  
getUrlCategory. This result is the hierarchical pagename, like  
__root:gloudemans.info:en.

getId then does a query with _root:gloudemans.info:en as  
datatree_name, but the name under which this page is stored is "en".  
Thus giapeto breaks here.

What is the right thing to do; fix Giapeto, or fix the Datatree?

Cheers,
Roel.