Merge pull request #21957 from owncloud/share2_to_ocp

apps/files_sharing/api/share20ocs.php

apps/files_sharing/lib/controllers/sharecontroller.php

apps/files_sharing/tests/api/share20ocstest.php

apps/files_sharing/tests/controller/sharecontroller.php

lib/private/appframework/dependencyinjection/dicontainer.php

lib/private/server.php

lib/private/share20/defaultshareprovider.php

lib/private/share20/manager.php

lib/private/share20/providerfactory.php

lib/private/share20/share.php

lib/public/iservercontainer.php

lib/public/share/imanager.php

lib/public/share/iproviderfactory.php

lib/public/share/ishare.php

lib/public/share/ishareprovider.php

tests/lib/server.php

tests/lib/share20/defaultshareprovidertest.php

tests/lib/share20/managertest.php