New parent-child module mechanism requires dependencies to be declared
in module.py. "woob repos" can the generate an appropriate modules.list
file.

Remove useless trailing \
Remove trailing spaces
Add missing empty lines

autopep8 -ir -j2 --select=E301,E302,E502,W291,W293,W391 .

Diff quickly checked.

Change every mention of MAINTAINER to avoid future issues.