[WIP][IN-300][Preprints] Prepare the preprint detail page for the preprint/node divorce

[laurenbarker]

This should go on a feature branch for the preprint/node divorce

Purpose

Prepare the preprint detail page for the preprint/node divorce.

Summary of Changes/Side Effects

• Removed supplementary file browser
• Removed link to project at bottom of metadata section
• Added supplemental materials link in header
• Changed the layout of the header to match what is planned for registrations
• Removed the logo on the right in the header
• Updated the loading indicator from spinner to ball scale

Testing Notes

Testing will be difficult without the backend changes.
Should check:

• Downloading the files

Cases:

• Node connected
• Node not connected

Ticket

https://openscience.atlassian.net/browse/IN-300

Notes for Reviewer

Reviewer Checklist

• meets requirements
• easy to understand
• DRY
• testable and includes test(s)
• changes described in CHANGELOG.md

[coveralls]

Coverage decreased (-0.6%) to 26.411% when pulling e837577 on laurenbarker:improvement/IN-300 into 2dc9703 on CenterForOpenScience:release/next-next-interfaces.

[alexschiller]

this was pulled in elsewhere.