Site update 0.5.3

Client-side search across the header preview and a dedicated /search page.

Text Editor:

• single sticky toolbar

• Show all the tools by default

• Adds image fit-in mode (smart crop, focal point, or fit whole image)

• 100k character body limit

  API key management tab on /u/edit: create, list, revoke, renew, reveal toggle, join the developer programme for access.

  Article grid ("story page") now renders news, events, partner and user posts with a CTA rail and kicker header.

  New columns rail on the front page, replacing the article rail bands.

  Assorted routing, tagging and analytics fixes.