Show charts for individual apps and individual functions

[nigeldeakin]

This is an enhancement request.

If there are a lot of functions then the charts that show queued/running/completed/failed will become crowded with information, and the legends will get rather large.

To address this:

• Extend the page for an individual app to show queued/running/completed/failed charts for an individual app.

• Add a new page for each function which show queued/running/completed/failed charts for that function only.