info view: add task selection controls and enable workflow metadata

[oliver-sanders]

Currently the "Info View" can open for a selected task, but you cannot change the task you are viewing from within the view.

This isn't a bit limitation, however, it might be a nice enhancement to allow the selected task to be changed from within the view (e.g. like we do in the "Log View").

Workflows can also have metadata, the "Info View" should be able to view this too (the log view has a Task/Workflow switch to do this).

Another related feature might be to list all (active?) instances of the task to allow you to easily access past/future instances.