* Make curve selection optional to avoid flickering in depth plots
* Replace undefined with zero for some curves
* Add spacing factor for min and max depth
- add CONGRAT
- add pressure track
- add CONFAC
- fix some plot layout issues
- Fix bug for first segment MD location
- Add default scale factor 1e-3 for gas curves
- Avoid inf values in some curves, seen in PRESSURE and CONFAC
- Use assignment in statements instead of std::get
* #8548 Horizontal track : Improve stacked curves
* Add horizontal track bar
* Show relevant scroll bar for horizontal and vertical plots
* Show max property value at top for horizontal plots