[armatures] Armature sensor must now be parented to its armature

Previously, armature sensors would get a reference to the armature
the monitor throught the 'armature' property.

Now, armature sensor just need to be parented to their armature.

This ensure it will work with the 'auto-renaming' patch.

While here:
- improved error message when armature is not found
- renamed ArmatureActuatorClass into Armature
- fixed gripper_testing
- removed kuka_lwr_testing
[actuator] Fix the name of variable exposed in local_data

Must be v, not x :). It works with socket unit-test because we blindly
rewrite local_data in socket datastream stuff, but it is not the case in
some other middleware (yarp for example)
Missing name change after renaming of armature_actuator to armature

While here, remove kuka_lwr from cmake as it has been removed
Invert the PTU/PTU sensor parenting order

This is to be consistent with armature actuator/armature sensor.

While here, updated doc for auto-generation.
[doc] Minor doc update in armature_pose
[testing] Add missing armature_pose to cmake
[builder] human is now a robot
Implement the new object renaming policy

This commit introduce the automatic renaming of components,
based on the name of the variable used in the Builder script
and the place of the component in the hierarchy.

This should provide more natural naming behaviour (the components
become accessible with the same name as they were referenced in the
script) and prevent most of the name collision (that used to introduced
suffixes like '.001 etc)

Canvevat: only components visible from the top-level script, or
components appended to components visible from the scripts are renamed.
[builder] Deal with component renaming at the configuration level
[builder] Don't give a default name in creator

It does not work well with auto renaming stuff :)
[builder] Explicitly destroy inspect frame
Drop deprecated py2 code path
[pymorse] Support new component naming scheme

With the auto-renaming patch in, MORSE components now have a consistent naming scheme with
the full cmpt hierarchy.

This commit add support for this component hierarchy in pymorse.

For example, if you put a gripper at the tip of an arm, previously you had:

>>> robot.gripper.grab()

Now you have:

>>> robot.arm.gripper.grab()

This should prevent some name collisions.

Updated gripper_testing to show the new API.
[testing] Adapt the different test to variable renaming
[builder] Try to better handling error at the builder level
[mw/yarp] Adapt port naming to new component names
[testing] workaround against sick regression

Seems to be yet another gc issue, as __del__ is not called properly on
the Sick object
[builder] Force the name of internal camera, in camera-like sensor

It is ok to do this here, because it is an internal object, that the
user cannot control directly.
[creator] call wheeledrobots ctor for SegwayRMP400
[creator] Fix two issue in the creation of human

- fix the name of human to Human, to workaround against issue #237
- use append to logically append the armature to the human robot