Remove/consolidate template redundant fields

[sebcoles]

The current template has redundancy in the fields and could have better names for the fields, this should be removed to reduce the number of fields to populate a template.

---
layout: post
repolink: ""
title: ""
description: ""
author: ""
author-link: "" <--author link could merged with author
content-type: "" <-- This could also have a better name such as "page-category" as it relates to a category on the website
language: "" <-- this could have a better name such as "optional-language-icon" as this is an optional property
repo: "" <-- could be discerned from repolink
---