Plot options ReservoirSimulationTimeSeries

[asnyv]

Modifications to ReservoirSimulationTimeseries:

• Allow statistical lines without fill (including new P50/median). (Easier to read, avoids overlapping color fills)
  • Can choose which statistics to include (Mean, P10, P50, P90, Max, Min)
• Option to remove history trace (and cut history trace at current date, as longer is not realistic even though Eclipse creates it)
• Add legendgroup to histogram traces to make them "toggleable"
• Allow histogram together with individual realizations
• Remove history traces in delta plots

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Technically breaking: statistics_hist no longer valid config option (but doubt it is used at all). The default statistics now refers to statistical lines, whilst fanchart refers to the old default. May consider to change the default to fanchart, but I think at least the naming is most descriptive this way.

Contributor checklist

• 🎉 This PR closes Option of removing fill in fan charts #503, closes History vectors are plotted into prediction #504, closes Histogram traces in ReservoirSimulationTimeSeries not toggled by clicking legend #496, closes Consider to remove history trace from delta ensemble in ReservoirSimulationTimeSeries #403, relates to (might close) Disable min-max shade #444, relates to (might close) Default choice for clickData based plots #226, relates to (will not close) Feature request - simulation time series #214.
• 📖 I have considered adding a new entry in CHANGELOG.md, and added it if should be communicated there.

[HansKallekleiv]

LGTM 👍