Refactor plots #87
Description
Now we have multipe plot types with duplicate code related to e.g. dimensions height/width/margin, (most of) axis, fonts, et cetera. It would be good refactor this, such that we can easily modify these things in one place and have it applied everywhere. Might also be useful for #83.
We could use solid.js contexts to create a ChartContainer. I played a bit with it in #75 but feel like creating a new PR would be better.