RimCase reintroduced as baseclass for all cases

Refactored to handle cases generically in  a lot of places.
Mostly complete regarding all these issues, but not tested yet:
Assigning caseId
Update relative path to the case data
RimProject::createDisplayModelAndRedrawAllViews
RimProject::computeUtmAreaOfInterest
Load case data on project open
save snapshots for all views
RegressionTest viewer size
Finding case based on caseId
Giving case information to octave

ApplicationCode/ProjectDataModel/RimGeoMechCase.h

@@ -18,6 +18,7 @@
 /////////////////////////////////////////////////////////////////////////////////
 
 #pragma once
+#include "RimCase.h"
 
 #include "cafPdmField.h"
 #include "cafPdmObject.h"
@@ -32,7 +33,7 @@ class RifGeoMechReaderInterface;
 ///  
 ///  
 //==================================================================================================
-class RimGeoMechCase : public caf::PdmObject
+class RimGeoMechCase : public RimCase
 {
      CAF_PDM_HEADER_INIT;
 
@@ -48,6 +49,9 @@ public:
 
     RimGeoMechView*                         createAndAddReservoirView();
 
+    virtual void                            updateFilePathsFromProjectPath(const QString& projectPath, const QString& oldProjectPath);
+    virtual std::vector<RimView*>           views();
+
     // Fields:                                        
     caf::PdmField<QString>                  caseUserDescription;
     caf::PdmPointersField<RimGeoMechView*>  geoMechViews;