Issue #2767275 by GoZ, Jo Fitzgerald, claudiu.cristea, boaloysius, andypost, klausi, dawehner: Convert web tests to browser tests for tour module

(cherry picked from commit 455672e7)

Issue #2872059 by naveenvalecha, mpdonadio, dawehner, Lendude: Convert web tests to browser tests for locale module

Issue #2776975 by joelpittet, dawehner, tim.plunkett, xjm, pfrenssen: March 3, 2017: Convert core to array syntax coding standards for Drupal 8.3.x RC phase

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #1533250 by YesCT, fran seva, TravisCarden, xjm, sriharsha.uppuluri | NROTC_Webmaster: Many coding standards clean-ups in locale module.

Issue #697760 by sun: Replace getInfo() in tests with native phpDoc + annotations (following PHPUnit).

Issue #2017475 by rodrigoaguilera, Outi, balagan: Multilingual tour for interface translation section.