ran composer update (after all it seemed travis started getting slow since yesterday independantly of this commit)

Revert 0dc425d0 as we notice System tests became much slower and also UI tests

plugins/API/Reports/Get.php(70): Warning - array_merge(): Argument 2 is not an array

Refactoring translation handling into a Translation component

500 HTTP status for PHP errors

These classes are only used in that plugin, so it doesn't make sense to keep then in Core.

Translations are now lazily loaded instead of being explicitely loaded by other components (e.g. the front controller, the plugin manager, etc...). Now other parties only configure "directories" where the translator can find translations. That makes the translator decoupled from the rest of Piwik.

Faster bootstrap for PHPUnit tests

[automatic translation update] Updated 31 strings in 5 languages (ar, da, de, el, es)