Refs #1823, fixed conversion tracking omission in initial GeoIP commit & added tests for conversion locations & unknown location. Removed 'Unknown' regions & cities from visitor log tooltips, added more detailed error messages for issues w/ the PECL module, add test w/ test IP and known result to isWorking methods and some more admin UI tweaks.



git-svn-id: http://dev.piwik.org/svn/trunk@7159 59fd770c-687e-43c8-a1e3-f5a4ff64c105