pelican-quickstart: switch to jinja2

- Use the jinja2 templating language for Makefile, fabfile,
  pelicanconf, publishconf, and develop-server.sh
- Add logic in pelican_quickstart.py
- Let jinja2 handle opening and reading template files
- Remove thus unused functions for string.Template

pelican/tools/templates/develop_server.sh.in

@@ -1,102 +0,0 @@
-#!/usr/bin/env bash
-##
-# This section should match your Makefile
-##
-PELICAN=$${PELICAN:-$pelican}
-PELICANOPTS=$pelicanopts
-
-BASEDIR=$$(pwd)
-INPUTDIR=$$BASEDIR/content
-OUTPUTDIR=$$BASEDIR/output
-CONFFILE=$$BASEDIR/pelicanconf.py
-
-###
-# Don't change stuff below here unless you are sure
-###
-
-SRV_PID=$$BASEDIR/srv.pid
-PELICAN_PID=$$BASEDIR/pelican.pid
-
-function usage(){
-  echo "usage: $$0 (stop) (start) (restart) [port]"
-  echo "This starts Pelican in debug and reload mode and then launches"
-  echo "an HTTP server to help site development. It doesn't read"
-  echo "your Pelican settings, so if you edit any paths in your Makefile"
-  echo "you will need to edit your settings as well."
-  exit 3
-}
-
-function alive() {
-  kill -0 $$1 >/dev/null 2>&1
-}
-
-function shut_down(){
-  PID=$$(cat $$SRV_PID)
-  if [[ $$? -eq 0 ]]; then
-    if alive $PID; then
-      echo "Stopping HTTP server"
-      kill $$PID
-    else
-      echo "Stale PID, deleting"
-    fi
-    rm $$SRV_PID
-  else
-    echo "HTTP server PIDFile not found"
-  fi
-
-  PID=$$(cat $$PELICAN_PID)
-  if [[ $$? -eq 0 ]]; then
-    if alive $$PID; then
-      echo "Killing Pelican"
-      kill $$PID
-    else
-      echo "Stale PID, deleting"
-    fi
-    rm $$PELICAN_PID
-  else
-    echo "Pelican PIDFile not found"
-  fi
-}
-
-function start_up(){
-  local port=$$1
-  echo "Starting up Pelican and HTTP server"
-  shift
-  $$PELICAN --debug --autoreload -r $$INPUTDIR -o $$OUTPUTDIR -s $$CONFFILE $$PELICANOPTS &
-  pelican_pid=$$!
-  echo $$pelican_pid > $$PELICAN_PID
-  mkdir -p $$OUTPUTDIR && cd $$OUTPUTDIR
-  $PY -m pelican.server $$port &
-  srv_pid=$$!
-  echo $$srv_pid > $$SRV_PID
-  cd $$BASEDIR
-  sleep 1
-  if ! alive $$pelican_pid ; then
-    echo "Pelican didn't start. Is the Pelican package installed?"
-    return 1
-  elif ! alive $$srv_pid ; then
-    echo "The HTTP server didn't start. Is there another service using port" $$port "?"
-    return 1
-  fi
-  echo 'Pelican and HTTP server processes now running in background.'
-}
-
-###
-#  MAIN
-###
-[[ ($$# -eq 0) || ($$# -gt 2) ]] && usage
-port=''
-[[ $$# -eq 2 ]] && port=$$2
-
-if [[ $$1 == "stop" ]]; then
-  shut_down
-elif [[ $$1 == "restart" ]]; then
-  shut_down
-  start_up $$port
-elif [[ $$1 == "start" ]]; then
-  if ! start_up $$port; then
-    shut_down
-  fi
-else
-  usage
-fi