Add a notification that new commentary is available

[campbellbartlett]

Is your feature request related to a problem? Please describe.
When viewing the commentary section, it is difficult to tell when there is new commentary available. At the moment the page needs to be refreshed.

Describe the solution you'd like
The page should display a notification letting the user know more commentary is available. If they click/tap the notification then they are scrolled to the top and the new commentary is loaded. We should also consider adding a dismiss button to the notification.

Describe alternatives you've considered

• Manual page refresh
• Have commentary load automatically when it becomes available. This was an issue because it was scrolling you to the top of the commentary view each time a new ball was bowled, which made it difficult to read older commentary.