Update "basicApp" example to include translation bundles

The current version shows how to set up the root bundle, but does not have any configuration for additional translations. The [i18n reference guide](https://dojotoolkit.org/reference-guide/1.10/dojo/i18n.html) does a great job at demonstrating this.

Start by locating the basicApp example and compare its current root-bundle setup with the linked i18n reference guide. Update the example to demonstrate configuration for additional translation bundles, then verify that the example reflects the documented setup.

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