Add a very initial page for book details
Add a very initial page for book details

The idea is this will also allow the user to delete books (that is,
rather than add file management into the browser, you can delete
content entries from their details page... which for now will be
a little minimal, but later allow for all sorts of modifications like
changing metadata and suchlike)

KDE/peruse,KDE/peruse,KDE/peruse