realsense: larger percentage for capturing point to grid

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37662 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[giac] run ratnormal on real and imaginary part separately for point printing in ggb mode.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37663 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e