Allow for SlidesContainer in edetail-lib@v1.0.1

@incuna/js I'm merging this and releasing straight away so we can get this into edetail-project
Aha. In fact I think the much better way to handle this is via the model. 

In all cases we should be interacting with the model, and then the views should be subscribing to model changes. What we should be doing here is passing the model in to this view, and then calling prev and next on the model. I think though this will require some of the other refactoring changes we are currently making to the `nestedModel `