Add google analytics to modules/cols

We are adding API / dbase support for a single extra string field, plus
tests
Improve a doctest enpassant

Improve a doctest enpassant again
Clean up print stmts
Force testdata refresh on every test

previously I was using a module level setup, called once for all tests
This was OK but did not refresh the testing data ie fixed modules.  So
changes polluted other tests.  Fixed
change name of gac field to googleTrackingID
Change name of gac->googleTrackingID in docs as well