This commit refactors the content for the fonts page. I focused on
organization and layout. I restructured the previous layout from a more
command line vs. GUI approach, and instead emphasized "packaged vs.
unpackaged" fonts.
I was inspired to rework this page because I went looking for it
recently, and the search engine led me here. :-)
Signed-off-by: Justin W. Flory (he/him) <git@jwf.io>