Gantt View

[kinow]

Not a high priority, but I am creating this issue now to move the work from #81 (to be closed) here.

[kinow]

Sketch attached in #75 by @oliver-sanders

[kinow]

And @oliver-sanders ' comment from #81:

Also introducing the gant chart:

• In live mode view projcted workflow timings.
• In anlysis mode view averaged timings for resource planning.

would probably need to run left to right and collapse nodes for real suites.

[oliver-sanders]

• Show dependencies to help suite developers identify bottlenecks.
• Show future cycles (using average job time perhaps with error bars) for basic Cylc forecasting.
• Task collapsing (same as graph, tree, dot views)

[oliver-sanders]

Screenshot Tim took of the Prefect GUI's equivalent of the Gantt view. Not the prettiest, but the inclusion of dependencies is interesting.