* Add system and measurable setting to enable cookie less tracking
* Never return a visitor id if cookieless tracking is forced
* Adds custom tracker.js to prevent cookies
* ignore exceptions
* cache setting in site attributes for faster tracking
* updates expected test files
* ensure getVisitorId also works without idSite in request
* fix js tests
* store global cookie flag in config to avoid failures when building tracker js
* use config instead of systemsetting
* use a new event to update the tracker file
* Fix handling in Request::getVisitorId()
* improve setting descriptions
* Revert "use config instead of systemsetting"
This reverts commit 1fdfb6808415d2984726cedfe2644de31086f927.
* Revert "store global cookie flag in config to avoid failures when building tracker js"
This reverts commit 2587dbb851d3e44f2740e39c91af3213930cad6f.
* code improvements
* Reset storage to ensure it's not filled with invalid database objects
* updates expected test files
* Remove measurable setting again
* move setting from systemsettings to ip anonymization settings
* Show a warning if tracker file is not writable
* updates expected test file
* apply some review feedback
* fix test
* updates expected screenshot
* apply review feedback
* submodule update
