Add registration notification support.

AndroidManifest.xml

@@ -262,6 +262,13 @@
               android:grantUriPermissions="true"
               android:authorities="org.thoughtcrime.provider.securesms" />
 
+    <receiver android:name=".service.RegistrationNotifier"
+              android:exported="false">
+        <intent-filter>
+            <action android:name="org.thoughtcrime.securesms.REGISTRATION_EVENT" />
+        </intent-filter>
+    </receiver>
+
        <uses-library android:name="android.test.runner" />
 </application>
 

src/org/thoughtcrime/securesms/service/RegistrationNotifier.java

@@ -0,0 +1,29 @@
+package org.thoughtcrime.securesms.service;
+
+import android.app.Notification;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.support.v4.app.NotificationCompat;
+
+import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.RoutingActivity;
+
+public class RegistrationNotifier extends BroadcastReceiver {
+  @Override
+  public void onReceive(Context context, Intent intent) {
+    NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
+    builder.setSmallIcon(R.drawable.icon_notification);
+    builder.setContentTitle(intent.getStringExtra(RegistrationService.NOTIFICATION_TITLE));
+    builder.setContentText(intent.getStringExtra(RegistrationService.NOTIFICATION_TEXT));
+    builder.setContentIntent(PendingIntent.getActivity(context, 0, new Intent(context, RoutingActivity.class), 0));
+    builder.setWhen(System.currentTimeMillis());
+    builder.setDefaults(Notification.DEFAULT_VIBRATE);
+    builder.setAutoCancel(true);
+
+    Notification notification = builder.build();
+    ((NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE)).notify(31337, notification);
+  }
+}