Moves Featured Research into a Config File

[ahaywood]

Previously, the featured research section was hard coded into the <FeaturedResearch /> component.

Now, the content is controlled through the content/site.toml file, making it easier to update.

Contents includes:

[main.featuredResearch]
publication = "publication ID"
title = "Title of the Publication"
description = "Description that will appear on the homepage"
link = "link that you want the button to point to"
buttonLabel = "button label"

[mvvmm]

Just flagging the year here no longer matches the year in the filename, in case that wasn't intended