SHS-Analysis: Always include the unfiltered gradient field in the variant
Related to #16 (closed): For the phase retrieval algorithm, the field of view of the farfield camera has to be determined. This only works by introducing a knwon amount of tilt to the WF and observe the shift in the farfield. Therefore, when recording a response, the tilt has to be included (later on this will come down to an "unfiltered WF", see #25 (closed)). In the regular control loop, the filtered aberrations have to be removed from the control matrix, so filtering the zernike-polynomials does not result in an unwanted drift of actuators.