Fix for 1+{1,2,3} in Giac

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26087 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Fix bad automatic selection of first geo when clicking drawing pad

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26088 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[giac] %= change

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26090 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e