Shoshana, Arnaud

We cleaned up the SensInv filters in the CRS filter bank. Those invert the CRS sensor response so the signal is still calibrated in urad below 50mHz. 

* fm9 is the reference filter (based on a fit of this measurement)
* fm1 is the running filter, which is a modified version of fm9 with lower Qs, to reduce ring down time during a filter reload or a step in the signal (see step response in fig2, red is fm1, blue is fm9).