New features:
* New control values plot, plots less controls as default
* Export to csv activated for all plots
* Objective values plot now differentiates between accepted and not accepted objective values
* Users can upload their own config to show custom plots
Other improvements
* Weighted objective function not shown when only a single objective function exists
* Objective plots now shows `data` instead of `statistics` by default
* Crossplots have been updated with help text
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