Adds extraction and migration of hit counts from legacy to cnx-archive.
Updates the optimization tables.
Test by date to avoid offset errors.
The time isn't used within the test anyway, so it should be just as accurate up to one day.
Localize the timezone definition to the testcase.
Moves the PGTZ definition and provides an empty db enforcement statement.
Merge pull request #12 from Connexions/hit-counts

Adds hit count migration from legacy to cnx-archive