Support bigger favicon sizes and remove most default favicons, sites might not have all sizes and then theme version will leak.

layouts/partials/favicons.html

@@ -8,7 +8,7 @@
 <link rel="manifest" href="{{ "site.webmanifest" | relURL }}">
 {{ end -}}
 {{ $favname := "" -}}
-{{ $favsizes := slice "128x128" "96x96" "48x48" "32x32" "16x16" -}}
+{{ $favsizes := slice "512x512" "256x256" "128x128" "96x96" "48x48" "32x32" "16x16" -}}
 {{ range $favsizes -}}
 {{ $favname = (printf "favicon-%s.png" .) -}}
 {{ if fileExists (path.Join "/static" $favname) -}}

static/site.webmanifest

@@ -1,21 +0,0 @@
-{
-  "name": "Zen demo",
-  "short_name": "Zen demo",
-  "icons": [
-    {
-      "src": "/web-app-manifest-192x192.png",
-      "sizes": "192x192",
-      "type": "image/png",
-      "purpose": "maskable"
-    },
-    {
-      "src": "/web-app-manifest-512x512.png",
-      "sizes": "512x512",
-      "type": "image/png",
-      "purpose": "maskable"
-    }
-  ],
-  "theme_color": "#ffffff",
-  "background_color": "#ffffff",
-  "display": "standalone"
-}