[tx-robot] updated from transifex

apps/files/l10n/ar.php

apps/files/l10n/ast.php

apps/files/l10n/bg_BG.php

apps/files/l10n/bn_BD.php

apps/files/l10n/ca.php

apps/files/l10n/cs_CZ.php

apps/files/l10n/da.php

apps/files/l10n/de.php

apps/files/l10n/de_CH.php

apps/files/l10n/de_DE.php

apps/files/l10n/el.php

apps/files/l10n/en_GB.php

apps/files/l10n/eo.php

apps/files/l10n/es.php

apps/files/l10n/es_AR.php

apps/files/l10n/es_MX.php

apps/files/l10n/et_EE.php

apps/files/l10n/eu.php

apps/files/l10n/fa.php

apps/files/l10n/fi_FI.php