This commit makes various tweaks and changes to how the Fedora Design
Team docs repository serves documentation. Key changes are noted below:

* Ignored more common build artifacts in `.gitignore`
* Change URL schema from `/design-docs/` to `/design/`
* Remove all artifacts from the pizza factory example
* Update partials file with several data-points about the Fedora Design
  Team and common collaboration points

Signed-off-by: Justin W. Wheeler <jwf@redhat.com>