Merge branch 'test/2.2.0/1'

.gitignore

backend/actions/ErrorAction.php

backend/config/test.php

backend/controllers/ErrorController.php

backend/controllers/FilesController.php

backend/mail/layouts/html.php

backend/mail/layouts/text.php

backend/mail/passwordResetToken-html.php

backend/mail/passwordResetToken-text.php

backend/tests/_bootstrap.php

backend/tests/_data/login_data.php

backend/tests/_support/FunctionalTester.php

backend/tests/_support/UnitTester.php

backend/tests/functional/LoginCest.php

backend/tests/functional/_bootstrap.php

backend/tests/unit/_bootstrap.php

backend/views/error/error403.php

backend/views/site/index.php

common/config/components-others.php

common/config/test.php