Merge pull request #12749 from owncloud/server2server-sharing-ng

apps/files_encryption/lib/hooks.php

apps/files_encryption/lib/util.php

apps/files_encryption/tests/share.php

apps/files_sharing/ajax/external.php

apps/files_sharing/api/server2server.php

apps/files_sharing/appinfo/routes.php

apps/files_sharing/application.php

apps/files_sharing/js/external.js

apps/files_sharing/lib/activity.php

apps/files_sharing/lib/connector/publicauth.php

...iles_sharing/lib/controllers/externalsharescontroller.php

apps/files_sharing/lib/external/manager.php

apps/files_sharing/lib/helper.php

apps/files_sharing/lib/share/file.php

apps/files_sharing/lib/updater.php

apps/files_sharing/tests/server2server.php

core/ajax/share.php

core/js/share.js

lib/private/httphelper.php

lib/private/security/certificatemanager.php