[debwww cron] often failed (at parts/7doc: python3)

Hi Laura,

FYI: I noticed that the often cron script failed, due to the python-policy
document. 

They have moved the doc to -dev package and converted to Sphinx.
I have fixed the scripts to deal with this (fingers crossed).

If you like, you could add my mail address for those cron scripts, to make
more people getting notice of such errors...


Regards
Holger