Jacobian for all manipulator examples corrected

demos/demo_AR01.m

demos/demo_GaussProd4nullspace_2D01.m

demos/demo_GaussProd4nullspace_3D01.m

demos/demo_GaussProd_interp_illustr01.m

demos/demo_Gaussian01.m

demos/demo_Gaussian02.m

demos/demo_Gaussian03.m

demos/demo_Gaussian04.m

demos/demo_Gaussian05.m

demos/demo_Gaussian06.m

demos/demo_Gaussian_illustr01.m

demos/demo_IK_minimal01.m

demos/demo_OC_DDP_humanoid01.m

demos/demo_OC_DDP_manipulator01.m

demos/demo_OC_DDP_pendulum01.m

demos/demo_OC_LQT01.m

demos/demo_OC_LQT_constrained01.m

demos/demo_OC_LQT_nullspace01.m

demos/demo_Riemannian_S1_interp01.m

demos/demo_Riemannian_S1_interp02.m