Remove unnecessary icon to enforce use of largest icon, and update th…

…eme/background colour to match specifications

game/static/manifest.json

@@ -1,53 +1,17 @@
 {
   "name": "Rapid Router",
   "short_name": "Rapid Router",
-  "theme_color": "#2196f3",
-  "background_color": "#2196f3",
+  "theme_color": "#4A4A4A",
+  "background_color": "#A0C53A",
   "display": "standalone",
   "orientation": "landscape",
-  "Scope": "/portal",
+  "scope": "/portal",
   "start_url": "/game",
   "icons": [
-    {
-      "src": "icons/icon-72x72.png",
-      "sizes": "72x72",
-      "type": "image/png"
-    },
-    {
-      "src": "icons/icon-96x96.png",
-      "sizes": "96x96",
-      "type": "image/png"
-    },
-    {
-      "src": "icons/icon-128x128.png",
-      "sizes": "128x128",
-      "type": "image/png"
-    },
-    {
-      "src": "icons/icon-144x144.png",
-      "sizes": "144x144",
-      "type": "image/png"
-    },
-    {
-      "src": "icons/icon-152x152.png",
-      "sizes": "152x152",
-      "type": "image/png"
-    },
-    {
-      "src": "icons/icon-192x192.png",
-      "sizes": "192x192",
-      "type": "image/png"
-    },
-    {
-      "src": "icons/icon-384x384.png",
-      "sizes": "384x384",
-      "type": "image/png"
-    },
     {
       "src": "icons/icon-512x512.png",
       "sizes": "512x512",
       "type": "image/png"
     }
-  ],
-  "splash_pages": null
+  ]
 }

game/templates/game/base.html

@@ -7,6 +7,7 @@
 
 {% block head %}
   {% include 'game/crowdin.html' %}
+  <link rel="manifest" href="{% static "manifest.json" %}">
 {% endblock head %}
 
 {% block secondaryButtons %}