3D cartesian coords by default

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32945 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
* merge code
* angle(line,plane)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32946 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e