ET configuration that agrees with MDC paper Fig.1 and ET-site.txt

3.....2
  . .
   .
   1

viewed from above.

Detector tensor defined as:

D1 = (1/2) * (n12 n12 - n13 n13)

and so on.

	modified:   modules/ETdetector.py
	modified:   tests/ETdetector/Detector.py