All the code from the activity and the fragments has been successfully
ported to the SwapWorkflowActivity + Views. Thus, the code is no longer
useful, as it was only kept over the previous WIP commits so that it
can be referred to to help re-implement fragments with views.
As per the select apps list, there is quite a bit of business logic
in this class, which is now spread between the activity and the view.
The activity needs to handle some stuff, because the zxing library
routes intents to either an activity or a fragment.
