Change needed to port from toolserver to wmflabs, mostly related to DB
change.

- We can't rely on a DB enumerating all namespace name/id for all
wiki, pywikibot can do that but the startup time of pywikibot is too high,
so I rely on an auto-generated python modules which contains the necessary
data to map namespace name to namespace id and to get Index: and Page:
localized names.

- Change also some path which was hard-coded for toolserver, some path
remains hard-coded, it'll fixed later.