hgweb: move archivelist to standalone function
This doesn't need to exist as an inline function in a method.
Minor formatting changes were made as part of the move.
Differential Revision: https://phab.mercurial-scm.org/D2813
FROM ubuntu:__CODENAME__
RUN apt-get update && apt-get install -y \
build-essential \
debhelper \
devscripts \
dh-python \
less \
python \
python-all-dev \
python-docutils \
unzip \
zip