Add missing new lines to header and implementation files

This should shut up warnings like: "warning: no newline at end of file"

Libs/ModuleDescription/ctkModuleDescription.cpp

@@ -188,4 +188,5 @@ QTextStream & operator<<(QTextStream &os, const ctkModuleDescription &module)
     os << *group;
     }
   return os;
-}
+}
+

Libs/Widgets/ctkAxesWidget.h

@@ -100,4 +100,5 @@ private :
 
 Q_DECLARE_METATYPE(ctkAxesWidget::Axis)
 
-#endif
+#endif
+

Libs/Widgets/ctkColorDialog.cpp

@@ -179,4 +179,4 @@ void ctkColorDialog::setColor(const QColor& color)
 {
   this->QColorDialog::setCurrentColor(color);
 }
-  
+

Libs/Widgets/ctkMaterialPropertyPreviewLabel.h

@@ -87,4 +87,5 @@ private :
   Q_DISABLE_COPY(ctkMaterialPropertyPreviewLabel);
 };
 
-#endif
+#endif
+