NNC : Add settings to preferences and compute on demand

Ported several commits from dev

#5913 Import NNC : Do not compute NNCs if importNNCs is disabled in preferences
#5914 Import faults : Avoid computation of faults if turned off in preferences 
#5925 NNC computations : Add flag in preferences to include inactive cells
Allan : Do not test for cached data in pytest
#5925 Simplify computation of fault data
#5932 NNC data : Compute geometry when NNC data is asked for
Remove obsolete parameters

ApplicationCode/FileInterface/RifReaderInterface.h

@@ -50,6 +50,7 @@ public:
     bool          isFaultImportEnabled();
     bool          isImportOfCompleteMswDataEnabled();
     bool          isNNCsEnabled();
+    bool          includeInactiveCellsInFaultGeometry();
     const QString faultIncludeFileAbsolutePathPrefix();
 
     virtual bool open( const QString& fileName, RigEclipseCaseData* eclipseCase ) = 0;