Merge pull request #14199 from owncloud/cast-type-manually

apps/files/ajax/delete.php

apps/files/ajax/download.php

apps/files/ajax/getstoragestats.php

apps/files/ajax/list.php

apps/files/ajax/mimeicon.php

apps/files/ajax/move.php

apps/files/ajax/newfile.php

apps/files/ajax/newfolder.php

apps/files/ajax/rename.php

apps/files/ajax/scan.php

apps/files/ajax/upload.php

apps/files_encryption/ajax/adminrecovery.php

apps/files_encryption/ajax/changeRecoveryPassword.php

apps/files_encryption/ajax/getMigrationStatus.php

apps/files_encryption/ajax/updatePrivateKeyPassword.php

apps/files_encryption/ajax/userrecovery.php

apps/files_external/ajax/addMountPoint.php

apps/files_external/ajax/applicable.php

apps/files_external/ajax/dropbox.php

apps/files_external/ajax/google.php