ExecStartPre has nginx -t to test the Nginx config before starting
the service initially but ExecReload will just issue an Nginx reload
without testing the config first. If the config ends up being bad
this takes Nginx down. Perform a config test before reloading and if
that fails leave Nginx running on the previous config in RAM.

Allow to use load_module directly

[nginx/users] convert file.present into file.managed with no content

[nginx/users] add makedirs to htpasswd deploy

Touch htpassw for nginx

[README] include nginx.ng.certifcates

Allow to specify a different passenger config file in nginx.ng

Fix for PR #172

Add default value when calling pillar.get on nginx:ng:dhparam

default value if dhparam isn't defined in the pillar.

Allow debug symbols to be included when compiling from source

Add dhparam creation

Add support for FreeBSD

New Feature/Improvement - Added deleted option to be able to remove site files

update README, closes #121

Improvement - Disable reload of nginx when enabled=False (previously the nginx was always reloaded if settings.config != None; even with enabled=False)

New feature - Enable the uploading of the config files

Updated pillar.example file with distro learnings

Fix for OpenSuse leap, salt 2016.3.4-84.13

In order to improve security and ease of use, added creation/generation
of dhparam file.

Make certificates path configurable.

Fix missing defaults when no `install_from_*` is set

Add support to install phusion passenger in the `ng`