and restore Transitions tests which I deleted by mistake earlier

refs #6162 Extending config setting enable_processing_unique_visitors_* to also affect the nb_uniq_users metric processing over periods, + only show Users metrics when it's greater than zero, + fix more tests and renamed test suite to UserIdAndVisitorIdTest

refs #6162 when aggregating periods, do not sum 'Unique Users' metric as this is not a valid operation.

Refs #6109 New core metric: nb_users as the count of distinct user ids. Means "Active Users". Displayed in Visitors Overview, in metrics picker, in API response, in Metadata

Conflicts:
	core/Version.php
	misc/package/build.sh

Refs #3490 Display User ID in the Visitor Profile, in the Visitor log and Last visits widget link/tooltip opening the Visitor profile

Refs #6109 cid should not require token_auth authentication. Note; this may fail the test with changes in Tracker.php

Changed JavaScript Tracking Code generation to use "//"

Conflicts:
	core/Version.php

fixes #6153 check whether the defined module and action actually exists if development mode is enabled

Update README.md

Fixed typo for Piwik 2.6.0

refs #6149 always require latest Piwik version when generating a plugin. Still todo: update plugin.json when generating a component. Also improved the controller example/template

Fixes #6128, fix opt-out iframe error (do not use renderTemplate since it will indirectly require the idSite query parameter). Includes new UI test.

[automatic translation update] Updated 62 strings in 1 languages (cs)