Allow user to pick which tab is the default view of the tracker.

[timbl]

And don't default the default to the list of all trackers, default it to the table view.

[josephguillaume]

Looks like the tab is currently set here:
https://github.com/solid/issue-pane/blob/c77363a20e189d6a85d93d538de4c51dd8ddb76f/issuePane.js#L399

Ideally we would also want to link directly to a view, so the view would be defined as a property of the tracker.
Presumably that's how a user preference would have been stored anyway as it's likely to be a per-tracker rather than app-wide choice.

What ontology would this be added to?
UI or WF?