The help (?) links throughout the client pointed to the old
www.audiobookshelf.org/guides/* pages, which no longer exist and
resolve to a 404. Update all of them to the current
audiobookshelf.org/docs/documentation/* locations.
This commit moves the library settings page over to use the new
component. This page is 1 of 2 that actually has a component for itself,
so it was mostly just modifying that existing component and wrapping it