[giac] improve form of Intersect[ ]

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26563 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Use the GeoGebra version of JSON, not the one comming with GWT

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26564 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Save matadata in Touch

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26565 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
All problems seem to be fixed for getting human readable NDG for Botana's method

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26566 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e