Changed copyright year to 2015.

Applications/ApplicationsLib/ProjectData.cpp

Applications/ApplicationsLib/ProjectData.h

Applications/CLI/ogs.cpp

Applications/DataExplorer/Base/CheckboxDelegate.cpp

Applications/DataExplorer/Base/CheckboxDelegate.h

Applications/DataExplorer/Base/ColorPickerPushButton.cpp

Applications/DataExplorer/Base/ColorPickerPushButton.h

Applications/DataExplorer/Base/LastSavedFileDirectory.h

Applications/DataExplorer/Base/OGSError.cpp

Applications/DataExplorer/Base/OGSError.h

...ations/DataExplorer/Base/QNonScalableGraphicsTextItem.cpp

...ications/DataExplorer/Base/QNonScalableGraphicsTextItem.h

Applications/DataExplorer/Base/QValueTooltipSlider.cpp

Applications/DataExplorer/Base/QValueTooltipSlider.h

Applications/DataExplorer/Base/RecentFiles.h

Applications/DataExplorer/Base/StrictDoubleValidator.h

Applications/DataExplorer/Base/TreeItem.cpp

Applications/DataExplorer/Base/TreeItem.h

Applications/DataExplorer/Base/TreeModel.cpp

Applications/DataExplorer/Base/TreeModel.h