[tiago] Added two versions of tiago (with/out pal-hey5 hand) + tiago unit-test

tiago_description/meshes/pmb2/base/base_collision.stl

tiago_description/meshes/pmb2/base/base_ring.stl

tiago_description/meshes/pmb2/objects/antenna.stl

tiago_description/meshes/pmb2/wheels/caster_1.stl

tiago_description/meshes/pmb2/wheels/caster_2.stl

tiago_description/meshes/pmb2/wheels/wheel.stl

...cription/meshes/sensors/xtion_pro_live/xtion_pro_live.dae

...cription/meshes/sensors/xtion_pro_live/xtion_pro_live.png

tiago_description/meshes/torso/torso_fix.stl

tiago_description/meshes/torso/torso_lift_collision.dae

tiago_description/meshes/torso/torso_lift_collision_core.dae

tiago_description/meshes/torso/torso_lift_collision_neck.dae

...escription/meshes/torso/torso_lift_collision_shoulder.dae

tiago_description/meshes/torso/torso_lift_with_arm.stl

tiago_description/meshes/torso/torso_lift_without_arm.stl

tiago_description/robots/tiago.urdf

tiago_description/robots/tiago_no_hand.urdf

unittest/test_load.py

unittest/unittest_utils.py