Add author page

[opatry]

• Create a page for each author (/authors/xxx/)
  • Ensure no identical author have different version (ex: Madeleine Wickham (alias Sophie Kinsella))
  • Page contains card to his books
  • A fancy display alternative to cards would be nice, a grid of cover
  • When hovering the cover, display in overlay the full card (keeping the original cover clickable?)
• Create a page for all authors (/authors/)
• Make author name clickable
• Maybe a picture a short bio of the author?
• Adjust view-transition.js to properly take into account these URLs (trying to make the pattern more generic)
• If Allow to tag books #1 tags issue is implemented, add list of tags for author's books.
• Define where to link to "all authors"
• Fill some/most author pictures & bio in @config[:author]
  • Alternative is to create as many pages as authors statically and dynamically inject list of books in preprocess, might be even simpler than using @config…
  • Add SensCritique link
  • Add Babelio link
  • Add Wikipedia link
• Replace site "profile picture" by author picture if any, and generic fallback avatar otherwise?
• Define proper fallback image
• Micro avatar in tag cloud if any?