Implement missing watch list email features.
Per Jessica:
So overall I think the Reverb watchlist notifications leave a lot to be desired still and are a step backwards in terms of helpful context compared to MW's emails. They're just a mail version of the web notifications.
Things helpful in MW's emails:
1. Page that changed (with current rev link)
2. Date of change
3. Who made the change (with link)
4. Diff link of the change
5. Diff link of changes since last visit
6. Edit summary
Reverb has 1, 3, 4 and that's it. Additionally the link to Special:Watchlist (big "View on Site" button) doesn't feel very helpful, at least in the context of email notifications, and especially for something we're giving such prominence.
Edited by Alexia