[git] Converted png from lfs to git.

.gitattributes

Applications/DataExplorer/Img/delete-icon.png

Applications/DataExplorer/Img/icon_glass.png

Applications/DataExplorer/Img/icon_glass_active.png

Applications/DataExplorer/Img/icon_global.png

Applications/DataExplorer/Img/icon_hlight.png

Applications/DataExplorer/Img/icon_hlight_active.png

Applications/DataExplorer/Img/icon_persp.png

Applications/DataExplorer/Img/icon_persp_active.png

Applications/DataExplorer/Img/icon_screen.png

Applications/DataExplorer/Img/icon_xminus.png

Applications/DataExplorer/Img/icon_xplus.png

Applications/DataExplorer/Img/icon_yminus.png

Applications/DataExplorer/Img/icon_yplus.png

Applications/DataExplorer/Img/icon_zminus.png

Applications/DataExplorer/Img/icon_zplus.png

Applications/DataExplorer/Img/open-icon.png

Applications/DataExplorer/Img/refresh-icon.png

Applications/DataExplorer/Img/save-icon.png

Documentation/OpenGeoSys-Logo.png