Issue #1196436 by kdebaas: 7.x-2.x version, based on code from google_analytics and piwik modules.

This version of the Statcounter module no longer uses the block system to insert Statcounter code on drupal pages. It also introduces the following new features:
    * Selectively track/exclude certain users, roles and pages
    * Cache the Statcounter code on your local server for improved page loading times
    * Access denied (403) and Page not found (404) tracking
    * DoNotTrack support (non-cached content only)