[tx-robot] updated from transifex

apps/files_external/l10n/da.php

apps/files_external/l10n/es.php

apps/files_external/l10n/et_EE.php

core/l10n/af_ZA.php

core/l10n/ar.php

core/l10n/ast.php

core/l10n/bg_BG.php

core/l10n/ca.php

core/l10n/cs_CZ.php

core/l10n/cy_GB.php

core/l10n/da.php

core/l10n/de.php

core/l10n/de_CH.php

core/l10n/de_DE.php

core/l10n/el.php

core/l10n/en_GB.php

core/l10n/eo.php

core/l10n/es.php

core/l10n/es_AR.php

core/l10n/es_MX.php