[tx-robot] updated from transifex

apps/files/l10n/eu.php

apps/files/l10n/ja_JP.php

apps/files/l10n/ru_RU.php

apps/user_ldap/l10n/sk_SK.php

core/l10n/cs_CZ.php

core/l10n/en_GB.php

core/l10n/eu.php

core/l10n/ja_JP.php

core/l10n/sk_SK.php

core/l10n/tr.php

l10n/ar/files.po

l10n/bg_BG/files.po

l10n/bn_BD/files.po

l10n/ca/files.po

l10n/cs_CZ/core.po

l10n/cs_CZ/files.po

l10n/cs_CZ/settings.po

l10n/cy_GB/files.po

l10n/da/files.po

l10n/de/files.po