* Get rid of "ghost" windows on startup.
Removes hide all docking windows feature for now, to be replaced by a new implementation. Will probably break some tests due to this.
* Guard use of back() on empty vector
* Add "Show Data Sources" to ensemble realizations
* Update summary plot as summary curve collection is not visible in tree view
* Set selection manager root in RiaApplication
* Always close both main windows if present
* Add copy/paste of summary multi plot
* Add test for RiuMainWindow::instance() before use
* Remove duplicated code
* Multiple Tree Views : Use getTreeViewWithItem() to find correct tree view
* Minor UI adjustments
Based on branch https://github.com/OPM/ResInsight/tree/system-msw-refactor
- Move completion settings to property of well path
- Rename to RimFishbones
- Export implicit COMPSEGS for fishbones main bore
- Add valve for each branch
- Increase version number to be able to handle import of legacy project files
