Add animated linecharts to the background

[thomasp85]

This may be a crazy idea - possibly fueled by a 24h travel day.

Build the website locally and see the effect on the front page

[georgestagg]

Neat, I don't hate it!

I do find it makes the first paragraph harder to read, though :(

[thomasp85]

I've added a subtle blurred background to the text which is neigh invisible but does mean the lines does not appear below the text

[georgestagg]

Yeah that's much better!

I like it, but we should give Teun the chance veto once he's back. Otherwise, looks good to me.