Use "*#*#36245#*#*" to activate the debug screen.

Dial *#*#36245#*#* on the dialer to activate the debug screen.
"36245" = "email"

It's useful when
- There's no keyboard.
- There's no account set up yet.
  (You can do it by entering the special username/password on new account
  screen, but that's a bit of a pain.)

It's also easier to tell to people.

Also, removed "sensitive logging", which should never be used.

Change-Id: Id692f8b216f2d85abe1880c452d2067f170dac83
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index ecbefed..f3b7450 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -233,6 +233,12 @@
                 <action android:name="android.intent.action.DEVICE_STORAGE_LOW" />
                 <action android:name="android.intent.action.DEVICE_STORAGE_OK" />
             </intent-filter>
+            <!-- To handle secret code to activate the debug screen. -->
+            <intent-filter>
+                <action android:name="android.provider.Telephony.SECRET_CODE" />
+                <!-- "36245" = "email" -->
+                <data android:scheme="android_secret_code" android:host="36245" />
+            </intent-filter>
         </receiver>
         <service android:name=".service.EmailBroadcastProcessorService" />