* Don't require package tag or file comment inside src
* Removed package tag from files inside src
* Fixed tests directory in phpcs.xml.dist
* Fixed usage of package tag
* Fixed new classes
* Fixed coding standards
* Fixed coding standards in tests
* Correct set parent path when wc-admin registered page is used as a breadcrumb parent
* Add some tests for PageController->get_breadcrumbs()
* Fix typos