Rename settings to properties to resolve conflict

Hiera checks ::settings:confdir, but it would get overwritten for some
reason (even though it's at a different scope), so I just got rid of the
source of the conflict
Using ensure_resource on packages

Makes for better conflict adding, but does add stdlib as a
dependency. This is acceptable because it's almost de facto.

Bumping version.
Adding user to wget::fetch resources
Removed long-ago deprecated curl package
Updating readme, comments
Bumping version
Adding create_resources function for plugins

Enables further use of Hiera
Updating Nginx tip in readme