Cross Domain tracking (#11243)

* some work on tracking cross domain

* fix some bugs

* fix some edge cases

* fixed tests and added more new tests

* we also need a device specific id to avoid when time is not correct on a different computer etc

* more tests

* minified piwikjs

* use only one parameter and validate values

* fix tests

* improve code

* Re-generated piwik.js

* UI Test

* Comments