Draw 3D arc when ray in 2D view

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31414 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Remove unused code

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31415 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Draw 3D arc when segment in 2D view

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31416 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Check is in view at the right place

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31417 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e