Everviz

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

New features:

Other improvements:
* Rename axis on delta plot
* Change axis type to int if plotting realization or batch

New features:
* Added wells plot to visualize well summary data
* Added component objective functions for multi objective case

Other improvements:
* Objective plot changed to dashed lines
* Filtered out columns with only NaN values

New features:
* Show weighted and normalized objective function values
* Possible to filter realizations in summary plots
* Add bar plot showing difference between 1st and best batch

Other improvements:
* Consistent use of realization vs simulation
* Removed inactive buttons from plots