computeFRI

Added model to compute FRI and some plots for experiments with force/torque sensors
Merge branch 'master' of https://github.com/robotology-playground/WBI-Toolbox

Conflicts:
	controllers/torqueBalancing/neckVel.mdl
someone wrongly commited this file adding personal paths
Someone wrongly added these files. These are automatically generating when compiling the WBIToolbox