[web/calendar] fix regression in previous changeset
"Enables css customization in CalendarView" was untested, and introduced a crash:
TypeError: not all arguments converted during string formatting
#! /bin/sh -e
case "$1" in
remove)
if [ -x "/etc/init.d/cubicweb-ctl" ]; then
invoke-rc.d cubicweb-ctl stop || true
fi
;;
esac
#DEBHELPER#
exit 0