Add document repository

[schwartzadev]

Description

Adds pages at /documents/<slug> for documents pulled from Contentful. Closes #934

[netlify]

This is a preview version of the site.

Built with commit 37a4b69

https://deploy-preview-947--upbeat-lovelace-3e9fff.netlify.app

[calibre-analytics]

Comparing Add document repository Snapshot #5 to median since last deploy of The COVID Tracking Project.

	Performance	FCP?	TTI?
Overall Median across all pages and test profiles	70  from 92	1.1s  from 670ms	3.3s  from 3.8s
Chrome Desktop Chrome • Cable	81  from 100	810ms  from 420ms	2.4s  from 1.7s
MotoG4, 3G connection Motorola Moto G4 • Regular 3G	63  from 86	1.3s  from 1.1s	4.4s  from 5.3s

2 pages tested

 Home

Browser previews

Chrome Desktop	MotoG4, 3G connection

Most significant changes

	Value	Budget
Total JSON size in bytes Chrome Desktop	144 Bytes  from 94 KB
Total JSON size in bytes MotoG4, 3G connection	144 Bytes  from 130 KB
Lighthouse Performance Score MotoG4, 3G connection	71  from 86
Total Page size in bytes Chrome Desktop	1.2 MB  from 1.5 MB
Total Page size in bytes MotoG4, 3G connection	1.3 MB  from 1.5 MB

_{2 other significant changes: Total JavaScript size in bytes on Chrome Desktop, Total JavaScript size in bytes on MotoG4, 3G connection}

 Data page

Browser previews

Chrome Desktop	MotoG4, 3G connection

Most significant changes

	Value	Budget
First Contentful Paint Chrome Desktop	990ms  from 440ms
First Meaningful Paint Chrome Desktop	990ms  from 440ms
Largest Contentful Paint Chrome Desktop	990ms  from 440ms
Speed Index Chrome Desktop	980ms  from 440ms
Total JSON size in bytes Chrome Desktop	50 KB  from 100 KB

_{5 other significant changes: Lighthouse Performance Score on MotoG4, 3G connection, Total JSON size in bytes on MotoG4, 3G connection, Lighthouse Performance Score on Chrome Desktop, Total JavaScript size in bytes on Chrome Desktop, Total JavaScript size in bytes on MotoG4, 3G connection}

_{Calibre: Site dashboard | View this PR | Edit settings}

[kevee]

@schwartzadev - looking good! New feature request:

Can we also add Netlify redirects to make clean URLs for the documents?

• Add slug and the file URL to the fetched fields in the query in gatsby-node
• use createRedirect to make a redirect from /document/download/[slug] to the URL in Contentful
• change the download link in the document page to link to that redirect

[kevee]

Looks great, @schwartzadev! Merging