Implemented in the API #trackLink method, as it’s the one in which
using callback makes most sense

refs https://github.com/piwik/piwik/pull/336

JSDOC for trackSiteSearch method parameters was wrong - number of parameters, their names and types did not match.
This patch fixes the issue.

 refs https://github.com/piwik/piwik/pull/325/files

Added option to configure custom request content processing logic before request content is sent to tracker

Move tracker proxy logic in js/index.php to js/tracker.php & allow the removal of the comment header in piwik.js (includes test). Also remove @group from static file serve test & fix bug in modified _readfile() proxy.

https://www.gnu.org/software/librejs/free-your-javascript.html#magnet-link-license

Piwik is a free/libre analytics platform. Refs #4455 GNU Package requirement to use free/libre instead of open source

added possibility to get/create a tracker by using "Tracker = AnalyticsTracker.getTracker" instead of "Piwik.getTracker". Variable will be set only if no such variable is defined yet

refs #5049 log to console (if exist) if methods, that are applied first, are registered multiple times. We do not throw an error as this would prevent script execution

Close PR#243

refs #4977 added a new method to the tracker to enableJSErrorTracking. This is beta... feedback is welcome...

Should make the JavascriptTests build green again

From forum feedback: http://forum.piwik.org/read.php?2,112741