update copyright

apps/external/ajax/setsites.php

apps/external/appinfo/app.php

apps/external/index.php

apps/files/appinfo/remote.php

apps/files_encryption/lib/crypt.php

apps/files_versions/history.php

apps/remoteStorage/WebDAV.php

apps/remoteStorage/ajax/revokeToken.php

apps/remoteStorage/auth.php

core/lostpassword/index.php

core/lostpassword/resetpassword.php

files/webdav.php

index.php

lib/app.php

lib/appconfig.php

lib/base.php

lib/config.php

lib/db.php

lib/files.php

lib/filestorage.php