new language: Valencian (caXV)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@25305 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[3D] allow parametric syntax for lines eg g: X = (-5, 5, 2) + t (4, -3, a)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@25306 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Parsing parametric equation for 3D line

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@25307 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e