Update Formatter.php

Update Formatter.php

Made changes in the coding style, added translation for 'days'.

Update FormatterTest.php

Made some changes in the expected array.

Update Formatter.php

Code style.

Made the last seen time more human readable by incorporating days in the time format.

fixed notice

we need tests to have deterministic 'idsubdatatable'

See https://github.com/piwik/piwik/issues/9088

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).

Try to fix nginx setup on travis. Includes new [tests] INI config parameter for port (since using port 80 is not allowed for normal users on linux).

Partially move NumberFormatter to DI, refactor NumberFormatterTest so not as many deprecated classes/methods are used, and add tests for NumberFormatter::format().

Rename InvalidationResultInfo to InvalidationResult and remove Period::getAllParentPeriods and replace its use in ArchiveInvalidator w/ some small SQL changes.

Fix regression, make sure if period is not supplied to ArchiveInvalidator then all periods are invalidated efficiently.