Legendre Vector Space

Specialization of Lagrange vector space to build Legendre SEM.
Basically is a n-th order Lagrange basis built on the zeros of (n-2) order Legendre polynomial with end dof added to enforce continuity.
Could be useful as basis for a Chebyshev/Jacobi collocation method.
Perfect! Just remove these last two lines, since nosetests will pick up the test correctly nonetheless.