Update notification icons.

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

@@ -140,7 +140,7 @@ public class KeyCachingService extends Service {
   }
 
   private void foregroundService() {
-    Notification notification  = new Notification(R.drawable.icon, "TextSecure Passphrase Cached", System.currentTimeMillis());
+    Notification notification  = new Notification(R.drawable.ic_menu_lock_holo_dark, "TextSecure Passphrase Cached", System.currentTimeMillis());
     Intent intent              = new Intent(this, ConversationListActivity.class);
     PendingIntent launchIntent = PendingIntent.getActivity(getApplicationContext(), 0, intent, 0);
     notification.setLatestEventInfo(getApplicationContext(), "TextSecure Cached", "TextSecure Passphrase Cached", launchIntent);

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

@@ -142,7 +142,7 @@ public class MessageNotifier {
     SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context);
     if (!sp.getBoolean(ApplicationPreferencesActivity.NOTIFICATION_PREF, true)) return;
 
-    Notification notification    = new Notification(R.drawable.stat_notify_sms, ticker, System.currentTimeMillis());
+    Notification notification    = new Notification(R.drawable.icon_notification, ticker, System.currentTimeMillis());
     String ringtone              = sp.getString(ApplicationPreferencesActivity.RINGTONE_PREF, null);
     boolean vibrate              = sp.getBoolean(ApplicationPreferencesActivity.VIBRATE_PREF, true);
     String ledColor              = sp.getString(ApplicationPreferencesActivity.LED_COLOR_PREF, "green");