The scene can go completely out of the screen

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29477 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Removed warning

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29478 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e