Merge user and admin menu to one single menu

Merge master => 3.0

Conflicts:
	core/Version.php
	core/WidgetsList.php
	plugins/CustomDimensions
	plugins/Goals/templates/getGoalReportView.twig
	plugins/Goals/templates/getOverviewView.twig
	tests/UI/expected-ui-screenshots

Don't handle '0' as empty value in label columns in datatables

[automatic translation update] Updated 77 strings in 4 languages (nb, ru, pl, sr)

Developer changelog updates for 2.16.1

Improve all websites dashboard performance when using range date

refs https://github.com/piwik/piwik/commit/4c334be38b8426f54a7e6ab314a82ec25ce49c81#commitcomment-16700320

URL query string parameters to remove from URL are now stored in config file

Fix outlinks and downloads are not tracked if document is already ready when piwik.js is loaded

fixes #9924 outlinks and downloads are not tracked if document is already ready when piwik.js is loaded

 	New automated test to detect when piwik.js minified file is out of sync with original piwik.js

pdate referrer spam list & search engine / social definitions https://github.com/piwik/piwik/issues/9817

UI tests: new "Learn more" link in JS Tracking code generator https://github.com/piwik/piwik/issues/9932

JS Tracking code generator: new link to help page "Measuring domains and/or subdomains" https://github.com/piwik/piwik/issues/9932

New unit test ensuring that JS SDK getCookieName depends on website ID refs https://github.com/piwik/piwik/issues/9932

Piwik.js 'setDomains' method supports page wildcards matching: example.com/index*

`setDomains("example.com/index*")` will correctly not track an outlink request to for example.com/index.html or example.com/index_en.html

refs #9932

Documenting the setDomains change - refs https://github.com/piwik/piwik/pull/9933 https://github.com/piwik/piwik/issues/9932

piwik.js: remove the feature of `setDomains` that sets cookie path

Instead, we will better document how to correctly set the cookie configuration. https://github.com/piwik/piwik/issues/9932