Added optoforce sensor
new threshold value for contact detection for blue feet with optoforce
Changes from Mark on RoughTerrain disk.
added missing files
Black feet works, but not optimal.
Fixed null char stuff.
Fixed virtual destructor in ForceSensorBase.hpp
Merge branch 'master' of bitbucket.org:ethz-asl-lr/c_slrobotstarlethcan/src/Devices/OptoforceSensor
First build system configuration and code cleanups