Add upcoming and past events page

[mattstier]

Description

On the front page there should be a section about the upcoming events. On a seperate page there should be all the events (past or future). It should also be possible to add a link about the related blog post.

Example design

Acceptance criteria

• Front page has 3 upcoming events
• There is a seperate page containing all the future and past events
• The page of all events is categorized with the future events on the top
• These events can have links to related blog posts