After merging the cross plot with the summary plot, the sources stepping can be simplified. Remove obsolete sources stepping code, to prepare for other source stepping issues.
* Remove light mode from theme selection
The light mode is not working well, and was intended to be used when exporting to pdf from dark mode.
* Allow direct edit of summary case name
The name for a summary case can be automatically created. If the user starts to edit the name manually, set the name option to Custom. Make the descriptionField available as not read-only, then it is possible to edit the name directly in the project tree using F2 or double-click.
* Allow drag of ensembles
* Add support for drag/drop of well segments
* Add support for well segment number stepping in toolbar
- add copy paste of plots into multi summary plot
- improve data source stepping for multi plot
- improve auto generated plot name, graph name and curve name
Fixes by clang-format
Improve readability
