Issue #1605332 by dawehner, tim.plunkett: Adapt language integration to d8.

lib/Drupal/views/Plugin/views/cache/CachePluginBase.php

lib/Drupal/views/Plugin/views/display/DisplayPluginBase.php

lib/Views/field/Plugin/views/field/Field.php

lib/Views/locale/Plugin/views/argument/Language.php

lib/Views/locale/Plugin/views/field/Language.php

lib/Views/locale/Plugin/views/field/NodeLanguage.php

lib/Views/locale/Plugin/views/filter/Language.php

lib/Views/locale/Plugin/views/filter/NodeLanguage.php

lib/Views/node/Plugin/views/argument/Language.php

lib/Views/node/Plugin/views/field/Node.php

lib/Views/node/Plugin/views/field/Revision.php

...iews/translation/Plugin/views/field/NodeLinkTranslate.php

...ws/translation/Plugin/views/field/NodeTranslationLink.php

...ews/translation/Plugin/views/relationship/Translation.php

modules/comment.views.inc

modules/field.views.inc

modules/language.views.inc

modules/locale.views.inc

modules/node.views.inc

modules/user.views.inc