Involved creating another view/state for which the swap workflow can
be in. It is not explicitly stated by setting the state of the SwapService,
as is the case with other views. Rather, it is inferred based on the
presence of a `NewRepoConfig` crafted from the incoming intent in
`onResume()`.
Also gave me an idea of how to move more logic out of individual views,
and into the SwapWorkflowActivity. That is, inflateInnerView should
return the inflated view, to be cast into the specific subclass. From
there, the activity can call methods directly on the view to set it
up, rather than having the view do that stuff itself. In the future,
may consider doing this with other views too.
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