support sysvinit scripts for the syslog forwarders

support the official nginx.org apt repo for debian users (at least)

the debian package installs the nginx service just fine, but the extra
fifo->syslog functionality would be nice to have under debian as well.

BUG: pkgrepo.absent, pkgrepo:watch_in(pkg), install_from_ppa

Revert "ENH: Add install_from_ppa pillar setting and PPA pkgrepo"

ENH: Add install_from_ppa pillar setting and PPA pkgrepo

Synchronized upstart script with the one recommended by nginx.

http://wiki.nginx.org/Upstart

Fixes #39.

This reverts commit f6ba9ddb59.

the nginx.ng formula is only compatible with the upcoming feature
release, as noted here:

https://github.com/saltstack-formulas/nginx-formula#nginxng

This argument is only currently available in develop, and thus does not
belong in this formula at this time.

Support http_realip module

Create /var/log/nginx before running mkfifo

Add tab completion for upstart

Optionally include nginx.users via a pillar value

Fixes missing requisites in ng.init

If upstart is used, add symlink: /etc/init.d/nginx -> /lib/init/upstart-job

Added map file to resolve apache utils package name

Feature/misc config items

set 'daemon on;' by default

Fix errors in source.sls

fix link to formula usage instructions