When a dock widget in a dock widget tab group is activated, a show event is triggered in IumMultiPlotBook::showEvent. This causes a crash if performUpdate is called in showEvent. Make sure the performUpdate is called from RimMultiPlot::onLoadDataAndUpdate()
* Adjust the max value for summary curves to get more space on top of plot
* Compute axis range before computing auto plot settings
* Use axis object name as key when computing aggregated min/max
* Guard infinite recursion for enableAutoValue()
* Avoid creation of curve legend widgets during construction of a multi plot
* Make sure default z-value is correct to avoid expensive Qwt updates
* Avoid duplicate plot updates
* Do not create internal Qwt legend by default
* RFT import: Avoid expensive method throwing exception if no data is found
* 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
* Make sure the subplot selected in the tree is shown in the multiplot viewer.
* Clean up multiplot toolbar handling a bit
* Remove old summary plot toolbar.
* Create a specialized summary plot page for showing multi plots
* Make summary plots always show in grid of selected size.
* Allow dragging summary addresses into empty main window area
* Limit grid to 4x4 cells
