Make sure we call setServicesEnabled in the BootReceiver

* Otherwise, there's a chance that various activities will be
  disabled (like MessageCompose), even if there are existing
  accounts.
* Enable BootReceiver by default

Change-Id: Id4669c41a846545d8bac5ad85736e1508074864a
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 3f87b7e..54cc166 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -181,9 +181,7 @@
             </intent-filter>
        </receiver>
 
-       <receiver android:name=".service.BootReceiver"
-              android:enabled="false"
-              >
+       <receiver android:name=".service.BootReceiver" android:enabled="true">
             <intent-filter>
                 <action android:name="android.intent.action.BOOT_COMPLETED" />
             </intent-filter>