Fixed webapp manifest

Fixes #1306

app/manifest.json

@@ -4,9 +4,6 @@
   "version": "0.5.5",
   "short_name": "Telegram",
   "manifest_version": 2,
-  "display": "standalone",
-  "orientation": "portrait",
-  "theme_color": "#497495",
   "app": {
     "background": {
       "scripts": ["js/background.js"]

app/manifest.webapp.json

@@ -1,12 +1,13 @@
 {
   "name": "Telegram",
   "description": "Telegram Web App.\nMore info & source code here: https://github.com/zhukov/webogram",
-  "version": "0.5.5",
   "short_name": "Telegram",
   "display": "standalone",
-  "orientation": "portrait",
   "theme_color": "#497495",
   "gcm_sender_id": "122867383838",
+  "start_url": "./?utm_source=web_app_manifest",
+  "scope": "/",
+  "background_color": "#fff",
   "icons": [
     {
       "src": "img/icons/icon16.png",
@@ -50,8 +51,19 @@
     },
     {
       "src": "img/icons/icon.svg",
-      "type": "image/svg",
+      "type": "image/svg+xml",
       "sizes": "513x513"
     }
+  ],
+  "related_applications": [
+    {
+      "platform": "play",
+      "id": "org.telegram.messenger",
+      "url": "https://telegram.org/dl/android?ref=webmanifest"
+    },
+    {
+      "platform": "itunes",
+      "url": "https://telegram.org/dl/ios?ref=webmanifest"
+    }
   ]
 }

gulpfile.js

@@ -76,7 +76,7 @@ gulp.task('copy-images', function () {
 
 gulp.task('copy', function () {
   return es.concat(
-    gulp.src(['app/favicon.ico', 'app/favicon_unread.ico', 'app/manifest.webapp', 'app/manifest.json', 'app/**/*worker.js'])
+    gulp.src(['app/favicon.ico', 'app/favicon_unread.ico', 'app/manifest.webapp', 'app/manifest.webapp.json', 'app/manifest.json', 'app/**/*worker.js'])
       .pipe(gulp.dest('dist')),
     gulp.src(['app/img/**/*.wav'])
       .pipe(gulp.dest('dist/img')),