Update android-support-v13.jar with the latest version

The current one is oudated and application crashes at runtime if it uses the new **android-support-v4.jar** along with the PushPlugin. The reason is that the `TaskStackBuilder$SupportParentable` class is missing in the older **android-support-v13.jar**:

```
Failed resolving Landroid/support/v7/app/ActionBarActivity; interface 245 'Landroid/support/v4/app/TaskStackBuilder$SupportParentable;'
```