Integration test change following up https://github.com/piwik/piwik/commit/fd199c13e185c2721860024ad4b39b856bdd53d4

As a Super User:

 * I can now see all segments that were created for this website by any other user
 * When a segment was created by another user who is not Super User, the segment appears below a new section "Visible to you because you have Super User access:"
 * Such segments are editable by the Super User
 * The only difference when editing someone else's segment, as a Super User, is that "This segment is visible to [ME]" now says "This segment is visible to [SEGMENT_AUTHOR_USERNAME]"
 * One can now search in the  search bar for a username and see all segments created by this user

For all users:

 * New section "Shared with you:" now lists segments created by a Super User, and marked as "Visible to [All Users]"
 * Before segments  shared with me, looked the same as segments I created, which was confusing

Archive in UITestFixture using correct test environment overrides (loadRealTranslations=1 is needed for archiving) so results are accurate. Also, do not use Fixture::getTestEnvironment() in fixtures, instead create new instances of TestingEnvironmentVariables so changes made to the file are not ignored/lost.

fixed notice

Allow extra environments to be specified through testing environment variables, add a new one for UI tests call ui-test.php, use to remove port from localhost in UI tests, and fix a bug in ContainerFactory (config/config.php should be applied after environment files).

Add event that allows plugins to archive data even if there are no visits for the period. Undocumented for now.

If a test case class or fixture class is supplied in TestingEnvironmentManipulator and cannot be autoloaded, throw an exception so some hard to debug test failures can be avoided.

This reverts commit 93f4c414.

Add expanded query param to DocumentationGenerator so the API test generation logic will not erase the param from API tests.