added images for GOptionPaneW

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32131 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
use GoptionPaneW for alert dialog

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32132 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e