configs: use configs dir as other projects do

.hgignore: cleanup

hgsubversion: Update hgsubversion to 1.8.6 to be compatible with mercurial 3.8.3

mercurial: Update mercurial to 3.8.3

version: bumped version from 4.0.2 to 4.1.0

version: bumped from 4.0.1 to 4.0.2

merge: merge back stable into default

Added tag v4.0.1 for changeset 77b6e243b4cc

merge: merged default into stable

packages: bump gunicorn to the same version as enterprise