Document the naming convention for the variables saved in the Matlab workspace

[gabrielenava]

In the new devel branch, I've changed the visualization part in the Simulink models and therefore also the variables that are saved in the Matlab workspace after stopping the model. This issue is to document the new naming convention.

[gabrielenava]

Variable name	Fixed-base-joint-control	Floating-base-position-control	Floating-base-torque-control
jointPos_DATA	Y	Y	Y
jointPos_Error_DATA	Y	Y	Y
jointPos_Desired_DATA	Y	Y	Y
tauMeasured_DATA	Y	X	Y
tauError_DATA	Y	X	Y
tauDesired_DATA	Y	X	Y
gravTorque_DATA	Y	X	X
jointReferences_DATA	Y	X	X
baseAcc_des_DATA	X	Y	X
jointAcc_des_DATA	X	Y	X
jointVel_DATA	X	Y	Y
jointVel_Error_DATA	X	Y	X
jointVel_Desired_DATA	X	Y	X
feetContactStatus_DATA	X	X	Y
KP_postural_diag_DATA	X	X	Y
QPStatus_DATA	X	X	Y
forces_l_sole_DATA	X	X	Y
moments_l_sole_DATA	X	X	Y
forces_r_sole_DATA	X	X	Y
moments_r_sole_DATA	X	X	Y
tau_star_afterSat_DATA	X	X	Y
baseVel_DATA	X	X	Y
base_pose_DATA	X	X	Y
pos_CoM_DATA	X	X	Y

[gabrielenava]

Documentation on the naming convention added. Closing the issue as archived knowledge.

[fjandrad]

@gabrielenava you can update with the jerk controller