HOME PAGE NEWS, SPONSOR BANNERS AND COMPETITIONS
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The app opens on a Home page that shows everything inside the app, plus four
sections you can keep up to date for everyone who uses it:

  banners       Sponsor / partner banners at the top (they take turns)
  news          "Latest updates"
  competitions  "Competitions" (each one disappears after its end date)
  coming        "Coming soon"
  discord       your Discord invite link (shows "Join the Discord" on the Home
                page and a "Help & community" button in the sidebar)

The app has a built-in copy of these. To update them for everyone without
sending a new version, put a feed file online:

1. Copy news-feed-template.json, fill it in, and save it as JSON.
   - Any section you include replaces the built-in one. Leave a section out
     to keep the built-in one.
   - Banner images should be about 1600 x 300 and on an https:// address.
   - "link" can be a web address (opens in the browser) or a page in the
     app such as #/gallery.
2. Put the file online somewhere with a direct link that starts https://,
   for example a GitHub Gist ("Raw" link), your website, or Dropbox
   (direct download link).
3. Point the app at it: create a text file called news-feed.txt in the data
   folder (%APPDATA%\BailsOffStudio) containing just that link.
   Or send the link to whoever builds the app so it's built in for everyone.

The Bails Off Discord Bot can read the same feed and post every new news item
and competition to #announcements, so one update reaches the app and Discord.

The app checks the feed when the Home page opens (at most every 30 minutes)
and keeps the last copy for when you're offline.
