Upgrade to elm-pages 2.0

[katjam]

Acceptance

• Good docs on how to add content
• better index & styling control

[katjam]

@Nikomus I'm part way through the port to elm-pages 2 and am removing the elm-ui stuff as part of it, so there may be some styling assist you can give soon. Maybe over the weekend?

[katjam]

Lol - one year on. I am actually doing this.

[Nikomus]

@katjam Will this help the site deploy on merge correctly? If not, we should probably wait to see what we need.

[katjam]

Yes, you are right. I am just had a bit of time to lay a bit more groundwork - but I will get the deploy working today as a separate short task