Convert site to Hugo (#8316)

This commit converts content and layout to use Hugo.

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

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+---
+title: Developer (disambiguation)
+id: developer
+date: 2018-04-12
+full_link: 
+short_description: >
+  May refer to: Application Developer, Code Contributor, or Platform Developer.
+
+aka: 
+tags:
+- community
+- user-type
+---
+ May refer to&#58; {{< glossary_tooltip text="Application Developer" term_id="application-developer" >}}, {{< glossary_tooltip text="Code Contributor" term_id="code-contributor" >}}, or {{< glossary_tooltip text="Platform Developer" term_id="platform-developer" >}}.
+
+<!--more--> 
+
+This overloaded term may have different meanings depending on the context
+