Head v3 and v2.5 configuration files have the wrong names about robots-configuration

[valegagge]

head v3 and head v2.5 configuration files have been copied by my experimental setup where there is the typo error that you are writing about.
Nobody noticed it and corrected it.

[traversaro]

Thanks @davidetome !

[traversaro]

This can be moved to https://github.com/robotology/icub-support , depending on the outcome of #17 .

[traversaro]

I fixed the names on iCubGenova02 do have a working system, but the problem still persists on other robots.

[traversaro]

The axes names for the face were never official defined as they are not in http://wiki.icub.org/wiki/ICub_joints , but for consistency I suggest that we use underscore also in them.

[davidetome]

@traversaro I take in charge to fix other robots and close the issue when done

cc @valegagge @randaz81

[davidetome]

fixed joints name

[traversaro]

cc @nunoguedelha