* Show help tab always on homescreen, update help icon, and fix tests
* Add items to help menu for homescreen, when taskName is blank
* Add test for homescreen items when taskName is blank
* Add or case for showing help for performingSetupTask, incase setup happens on annother route
* Removed tabindex logic to allow for keyboard navigation when multiples tabs are available
* Update activity panel height and top when new navigation experience is enabled
* Moved style back into scss wrapper and used parent selector - &
Fixeswoocommerce/woocommerce-admin#4592
This adds the functionality to support a store setup tab displayed in ActivityPanel. The tab currently just redirects to the home page, rather than implementing the nice-to-haves of displaying the task list in the panel. The reason for this, is that I found it would require significant refactoring of the task list to support this currently.
As part of this I have also refactored rendering of tabs inside into 2 new functional components: <Tabs> and <Tab>. The reason for this is to decompose large untestable components, test them and by virtue of being decomposed they will also be more reusable in future. Ideally would have been refactored to a functional component as well, but it would have been too large a task.