nginx/package: add onlyif requisite to nginx-old-init

add depenency to salt-contrib's basicauth

touch htpasswd file if it doesn't exist

Fixes #70

change watch to listen so it will only trigger a refresh of the service at the end

Replace the term vhost for server everywhere and solve issue #105

avoid crash if private_key is not shipped in pillar

Add newline to blocks like location, server, httpd and etc

Fix overwrite check testing the name of the vhost rather than setting…

Fix state fail when NGINX is already installed

Auto-restart NGINX and use pillars to set conf path when building from source

Build from source with nginx.ng

Build NGINX from source with nginx.ng state with support for passing
compile time flags necessary for installing modules such as more headers
by the openresty project.

Fix ppa install for Debian

On Ubuntu, you can take advantage of Personal Package Archives on Launchpad simply by specifying the user and archive name.  On other apt-based systems this must be the complete entry as it would be seen in the sources.list file.

Add lookup index for CentOS

Support installing the packages from the official repo on Debian

enabled

Added support to control gpgcheck and gpgkey via pillar

Fix the command that was killing nginx process.

Workaround for include being defined too early

This is crap but configuration for http scope cannot be both ordered and
merged from map.jinja it seems, see issue #40.

Adding default include for 'sites-enabled' dir

Resolve missing dependency for nginx home dir.

To resolve the occurrence of the below error, a dependency has been added to require the nginx user first be created, either by nginx package installation or explicitly with salt (when installing nginx from source).

```
----------
          ID: /var/www
    Function: file.directory
      Result: False
     Comment: User nginx is not available Group nginx is not available
     Started: 15:50:02.070799
    Duration: 0.531 ms
     Changes:
----------
```