#5147 Fix RimFileWellPath::setupBeforeSave addressing the filePath

Needs to copy the cached wellpaths on save.
Split the cached filePath and the uncached filePath to only list the external well paths in the global path list, and to be able to copy the cached files on save.

ApplicationCode/ProjectDataModel/RimWellLogFile.cpp

@@ -191,7 +191,7 @@ bool RimWellLogFile::readFile( QString* errorMessage )
     this->firstAncestorOrThisOfType( wellPath );
     if ( wellPath )
     {
-        if ( wellPath->filepath().isEmpty() ) // Has dummy wellpath
+        if ( wellPath->filePath().isEmpty() ) // Has dummy wellpath
         {
             wellPath->setName( m_wellName );
         }
@@ -244,7 +244,7 @@ void RimWellLogFile::updateFilePathsFromProjectPath( const QString& newProjectPa
 {
     // bool                 foundFile = false;
     // std::vector<QString> searchedPaths;
-    // 
+    //
     // QString fileNameCandidate =
     //     RimTools::relocateFile( m_fileName(), newProjectPath, oldProjectPath, &foundFile, &searchedPaths );
     // if ( foundFile )