Well path models can now be added to geo mech models. Moved code that
adds well path models to a scene from RimEclipseView to
RimView::addWellPathsToScene(). This new function is now used by both
RimEclipseView and RimGeoMechView. Made sure that it is not needed to
load a result before well paths appear. TODO: Compute characteristic hex
element size for geo mech models.
#316 Do not show wrong results ...
#317 Avoid stopping animation when switching results
This commit cleans up some of the inconsistencies etc in the top of the
display model generation logic.
