Design UI for Fold

[srid]

Before doing #7 I must design the new UI.

How to present individual moments, summarized folds, calendar marks?

Come up with an overall picture before working on data schema and controller.

• Make single moment UI a sub-component or separate component (so it can be re-used)
• Make edit component compostable - Revamp edit model #25
• Can the edit component be abstracted to edit any model type? (Moment, Fold, Mark)
• Finalize overall UI flow

[srid]

Probably should keep it all simple by having a single UI. Begin with the whole tree (rendered as calendar), and narrow down to whatever range of entries we want to show by having the user click at day/week/year level (fold level).

Also create an abstract editor to be able to edit multiple types of things (moments, folds, but also marks).

type alias Model =
  { tree     : List (Fold.Model Fold.YearLevel)
  , filter   : Search.Model
  , pagination : Range # int int
  }

cf. Look up 'tree pagination'