Merge pull request #14346 from owncloud/storage-based-path-validation

apps/files/ajax/newfile.php

apps/files/ajax/newfolder.php

apps/files/js/files.js

apps/files/tests/js/fileUploadSpec.js

apps/files/tests/js/filesSpec.js

lib/private/connector/sabre/exception/invalidpath.php

lib/private/connector/sabre/file.php

lib/private/connector/sabre/node.php

lib/private/connector/sabre/objecttree.php

lib/private/files/storage/common.php

lib/private/files/storage/wrapper/wrapper.php

lib/private/files/view.php

lib/private/l10n.php

lib/private/util.php

lib/public/files/invalidcharacterinpathexception.php

lib/public/files/reservedwordexception.php

lib/public/files/storage.php

lib/public/util.php

ocs/v1.php

remote.php