Hang, Sheila, Stefan

We closed some more WFS loops:

A) MICH_P/MICH_Y loop:
 - We phased and compared the AS_A_36 against the 72 signals. Since the AS_A_36 had a cleaner error signal, we decided to use AS_A_36_Q for the BS for now. That loop is now engaged at the beginning of the CARM reduction sequence, and never turned off.
 - Also, so far we drive DHARD to ETMs only. We will have to enable the ITM feed-back as well.
 - We also turned on INP1 (gain -1) and PRC2 (gain 500). PRC2 slightly draws down the recycling gain at the moment, but closes just fine.
 - Next we closed CHARD with low gain (engaged at 0.03, then increased to 0.3). But when we tried the +46dB we got a gain oscillation in pitch. SO for now we stay at low gain in CHARD.  

 - We tried to put all of that in Guardian (REFL_POP_WFS), but the PRC2 and CHARD engagement gave us some problems. So for now Guardian doesn't engage PRC2/CHARD.