[giac] Output fix for hyperplan
New function evalfa that converts non parametric rootof to decimal approximation (to be called by ggb on giac output)
Tangent fixes.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37473 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Image of turtle turns with the turtle.(#4721)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37474 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Changing giac.js to the latest version in web/kickstart.xml

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37475 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e