Fixup generation for instationary stuff as well

test/hyperbolic/linearacoustics.ufl

test/hyperbolic/lineartransport.mini

test/hyperbolic/lineartransport.ufl

test/hyperbolic/shallowwater.mini

test/hyperbolic/shallowwater.ufl

test/laplace/laplace.mini

test/laplace/laplace_dg.mini

test/navier-stokes/navierstokes_2d_dg_quadrilateral.mini

test/navier-stokes/navierstokes_2d_dg_quadrilateral.ufl

test/navier-stokes/navierstokes_3d_dg_quadrilateral.mini

test/navier-stokes/navierstokes_3d_dg_quadrilateral.ufl

test/nonlinear/diffusivewave.mini

test/nonlinear/nonlinear_dg_matrix_free.mini

test/nonlinear/nonlinear_matrix_free.mini

test/poisson/poisson.mini

test/poisson/poisson_dg.mini

test/poisson/poisson_dg_matrix_free.mini

test/poisson/poisson_dg_neumann.mini

test/poisson/poisson_dg_quadrilateral.mini

test/poisson/poisson_dg_tensor.mini