Fixed no texture issue in dae meshes
Conversion is corrected in get_big_bird_models. get_big_bird_models also now saves to a central models directory, allowing us to remove gazebo_model_path.bash.
gazebo_simulate_kinect/launch/spawn_kinect.launch removed becase it was unused.
Updated scripts to use proper env variables
Updated build_training_data2.py to save rgb images and include joint_angles in the dataset.
Updated grasp.py to use a namedtuple rather than a class (namedtuples are immutable)
Fixed texures not written to dae files and general cleanup
Updated to use new common paths and corrected texture not appearing in dae problem
pulling in changes for grasp as named tuple with virtual contacts