Events page

[davetcoleman]

We need to remove the two events on the Contribute menu (WMD and MW) and instead have a single link for 'Events' on that menu

That page will then go to a 'filtered' blog page, that only shows posts that have the 'events' tag used

In this way, we can write blog posts for events that show up both on the blog and on the events page, all at once

[henningkayser]

@L4co77 could you tackle this? It would still be a very useful improvement.