First implementation of Headless (#4392)

* Revert "#4377 Octave : Use RiaLogging for error messages instead of QErrorMessage "

This reverts commit f758a8edb2.

* Revert "#4380 Preferences : Changing scene font size when geo mech view is open causes crash"

This reverts commit df62a41397.

* Revert "#4379 Documentation : Update command line parser for import of summary files"

This reverts commit d0b5357ed4.

* Unfinished WIP

* Builds but crashes

* Refactored code now builds and runs

* ResInsight can now run the unittests headless

* Can run some command files successfully

* Build on Linux

* Extra headless hack header

* Moved PdmUiItem hack to cpp file

* Fix headless crash in RimWellAllocationPlot

* Handle error gracefully if ExportSnapshots command is executed from console

* Add caf::QIconProvider and remove some hacks

* Also made the greying out of disabled icons work for a couple of cases where it didn't.

* Linux build fix

* #4380 Reimplement fix df62a41397 by @magnesj on top of Headless code changes

* #4379 Reintroduce kode from d0b5357ed4 by @magnesj

* #4377 Restore f758a8edb2 in new Headless code

ApplicationCode/ProjectDataModel/RimViewLinker.h

@@ -29,9 +29,14 @@
 #include "cvfBase.h"
 #include "cvfVector3.h"
 
+namespace caf
+{
+class QIconProvider;
+}
+
 namespace cvf
 {
-    class BoundingBox;
+class BoundingBox;
 }
 
 class RimViewController;
@@ -83,8 +88,7 @@ public:
 
     void                                    addViewControllers(caf::PdmUiTreeOrdering& uiTreeOrdering) const;
 
-    static void                             applyIconEnabledState(caf::PdmObject* obj, const QIcon& icon, bool disable);
-    static void                             findNameAndIconFromView(QString* name, QIcon* icon, RimGridView* view);
+    static void                             findNameAndIconFromView(QString* name, caf::QIconProvider* icon, RimGridView* view);
 
     void                                    updateCursorPosition(const RimGridView* sourceView, const cvf::Vec3d& domainCoord);
 
@@ -103,5 +107,4 @@ private:
     caf::PdmChildArrayField<RimViewController*>   m_viewControllers;
     caf::PdmPtrField<RimGridView*>                m_masterView;
     caf::PdmField<QString>                        m_name;
-    QIcon                                         m_originalIcon;
 };