Convert site to Hugo (#8316)

This commit converts content and layout to use Hugo.

content/en/docs/reference/glossary/contributor.md

@@ -0,0 +1,18 @@
+---
+title: Contributor
+id: contributor
+date: 2018-04-12
+full_link: 
+short_description: >
+  Someone who donates code, documentation, or their time to help the Kubernetes project or community.
+
+aka: 
+tags:
+- community
+---
+ Someone who donates code, documentation, or their time to help the Kubernetes project or community.
+
+<!--more--> 
+
+Contributions include pull requests (PRs), issues, feedback, {{< glossary_tooltip text="special interest groups (SIG)" term_id="sig" >}} participation, or organizing community events.
+