Compile error fixed (GeoPoint x GeoPointND)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34990 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
change splash screen to "Release Candidate"

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34991 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
4.9.283.0

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34992 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e