Replacing the former ColumnFormatter abstraction, we now have column renderers provided by Vaadin 8. We currently don't have many stock renderers though. We need to do at least:

• carefully review the column definition and see what is the best way to configure the renderer
• figure out how to supply column icons via renderers
• implement node status renderer
• implement boolean (with ticks/crosses)
• implement renderer for tags
• consider some free-form renderer with HTML/JSON

User story

When I want to know how my landing pages are performing, I want to see content performance data aggregated and displayed with an up/down arrow in a column in the Pages app, so that I can quickly tell which pages are doing well and which are doing poorly.

Acceptance criteria:

• Implement 3 example column renderers:
  • Node status renderer (publishing status, read-only status)
  • Boolean renderer (tick/cross, up/down, yes/no)
  • Content tags renderer
• Provide a basic document that explains how a third-party developer can implement their own column renderer.