Fix for Sparebank1 OTP application

Now in its own branch. Dear $deity, hope this is correct.

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

@@ -31,6 +31,10 @@ public class SmsListener extends BroadcastReceiver {
   private static final String SMS_RECEIVED_ACTION = "android.provider.Telephony.SMS_RECEIVED";
 
   private boolean isExemption(SmsMessage message, String messageBody) {
+	// ignore OTP messages from Sparebank1 (Norwegian bank)
+    if (messageBody.startsWith("Sparebank1://otp?")) {
+      return (true);
+    }	  
     // Sprint Visual Voicemail
     return 
       message.getOriginatingAddress().length() < 7 &&