Content\Entities: Added new indexes (url, expired, released).
Typos.
Components\SearchControl: Better higlighting.
Content\Entities: `setLocale` method must set locale in main class.
Content\Listeners\PageListener: Fixed cache.
Content\Presenter\ItemPresenter: Counting has been separated to own method.
Content\Presenters\PagePresenter: Fixed `getLanguage` method.
Content\Routes\PageRoute: Performance optimizations.