Everviz

What's Changed
* Scatter plot legend by DanSava in https://github.com/equinor/everviz/pull/163
* Limit summary value selection to two keys by frode-aarstad in https://github.com/equinor/everviz/pull/164
* Add selectable control by DanSava in https://github.com/equinor/everviz/pull/165

New Contributors
* frode-aarstad made their first contribution in https://github.com/equinor/everviz/pull/164

**Full Changelog**: https://github.com/equinor/everviz/compare/0.0.16...0.0.17

- Fix the wells plot
- Add a gradient plot

New features:
* Directly download CSV files from the everviz plugins
* Allow multiple axis for summary plots

Other improvements:

* Re-enable save plot buttons and fix tests
* Fix plot download filenames

New features:

Other improvements:
* Add min, max with realization to the statistics function
* Handle Ctrl-C in order to show exit message when running everviz.
* Show actual realization ids in example placeholder text
* Rename screenshot files
* Show warning with number of realization when selecting statistics
* Change summary statistics color for different batches and dates