new calibration for F11

Using a value of 70 MeV energy loss and the file 161107_0833_Overnight.root
We obtained new peak positions: for V1A7C3 peak at 5398 (F11 right), for V1A7C4 (F11 left) peak at 6060

F11_rigth (V1A7C3): 0.01297
F11_left (V1A7C4): 0.01155