Add pwa support

lib/main.dart

@@ -60,10 +60,13 @@ class MyApp extends StatelessWidget {
   static FirebaseAnalyticsObserver observer =
       FirebaseAnalyticsObserver(analytics: analytics);
   static final _defaultLightColorScheme =
-      ColorScheme.fromSwatch(primarySwatch: Colors.blue);
+      ThemeData(colorSchemeSeed: const Color.fromARGB(255, 105, 140, 243))
+          .colorScheme;
 
-  static final _defaultDarkColorScheme = ColorScheme.fromSwatch(
-      primarySwatch: Colors.blue, brightness: Brightness.dark);
+  static final _defaultDarkColorScheme = ThemeData(
+          colorSchemeSeed: const Color.fromARGB(255, 105, 140, 243),
+          brightness: Brightness.dark)
+      .colorScheme;
 
   // This widget is the root of your application.
   @override

web/index.html

@@ -18,18 +18,18 @@
 
   <meta charset="UTF-8">
   <meta content="IE=Edge" http-equiv="X-UA-Compatible">
-  <meta name="description" content="A new Flutter project.">
+  <meta name="description" content="The modern Edupage client">
 
   <!-- iOS meta tags & icons -->
   <meta name="apple-mobile-web-app-capable" content="yes">
   <meta name="apple-mobile-web-app-status-bar-style" content="black">
-  <meta name="apple-mobile-web-app-title" content="eduapge2">
+  <meta name="apple-mobile-web-app-title" content="EduPage2">
   <link rel="apple-touch-icon" href="icons/Icon-192.png">
 
   <!-- Favicon -->
   <link rel="icon" type="image/png" href="favicon.png"/>
 
-  <title>eduapge2</title>
+  <title>EduPage2</title>
   <link rel="manifest" href="manifest.json">
 
   <script>

web/manifest.json

@@ -1,35 +1,18 @@
 {
-    "name": "eduapge2",
-    "short_name": "eduapge2",
+    "name": "EduPage2",
+    "short_name": "EduPage2",
     "start_url": ".",
     "display": "standalone",
     "background_color": "#0175C2",
-    "theme_color": "#0175C2",
-    "description": "A new Flutter project.",
+    "theme_color": "#698cf3",
+    "description": "The modern Edupage client",
     "orientation": "portrait-primary",
     "prefer_related_applications": false,
     "icons": [
         {
             "src": "icons/Icon-192.png",
             "sizes": "192x192",
             "type": "image/png"
-        },
-        {
-            "src": "icons/Icon-512.png",
-            "sizes": "512x512",
-            "type": "image/png"
-        },
-        {
-            "src": "icons/Icon-maskable-192.png",
-            "sizes": "192x192",
-            "type": "image/png",
-            "purpose": "maskable"
-        },
-        {
-            "src": "icons/Icon-maskable-512.png",
-            "sizes": "512x512",
-            "type": "image/png",
-            "purpose": "maskable"
         }
     ]
 }