* Move layout options to separate toolbar
* Enable stepping on quantities, remove special history curve stepping for now
* Allow stepping ensembles and cases
* Add step next/prev and add new sub plot
Data source stepping for multi plot is work in progress, and have disabled stepping for single summary plots. This commit will make it possible to do source stepping on single summary plots.
- 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