add WebView

app/src/main/AndroidManifest.xml

@@ -2,7 +2,10 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="de.weseng.wifiweatherstation">
 
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.INTERNET" />
     <application
+        android:usesCleartextTraffic="true"
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
@@ -18,4 +21,4 @@
         </activity>
     </application>
 
-</manifest>
+</manifest>