CUPS Admin 1.1.1

Packaging fix: the app is now a normal payload install. The package installs /Applications/CUPS Admin.app as a payload with a receipt (pkgutil --files edu.wku.cupsadmin) and records /Applications with its system ownership (root:admin), and installs /usr/local/bin/cupsadmin with a postinstall script as before. For Munki, only the CLI needs an installs entry. Installs cleanly as an upgrade over 1.1.0.