Distance for 3D axes and grid

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34598 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Only 2+1 grid distances (also in 3D)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34599 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
3D axis : ticks style

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34600 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e