Added service to return content

[danieltaylor-nz]

This service was useful for displaying product content in the front end. Currently, the ProductContent list does not return the actual content text, as to-date, the only content displayed in the demo store was images. I added this service to return that text:

<#assign ingredients = ec.service.sync().name("popstore.ProductServices.get#LocationText")
        .parameter("location", ingredientsContent.contentLocation).call().text>

Another solution might be to return a map of productContentText on the context, so looking for feedback on this.