[tx-robot] updated from transifex

apps/files_external/l10n/nl.php

apps/user_ldap/l10n/de_DE.php

apps/user_ldap/l10n/nl.php

apps/user_webdavauth/l10n/cs_CZ.php

apps/user_webdavauth/l10n/de_DE.php

apps/user_webdavauth/l10n/ja_JP.php

apps/user_webdavauth/l10n/nl.php

apps/user_webdavauth/l10n/pl.php

apps/user_webdavauth/l10n/ru_RU.php

core/l10n/nl.php

l10n/ar/settings.po

l10n/bg_BG/settings.po

l10n/ca/settings.po

l10n/cs_CZ/settings.po

l10n/cs_CZ/user_webdavauth.po

l10n/da/settings.po

l10n/de/settings.po

l10n/de_DE/settings.po

l10n/de_DE/user_ldap.po

l10n/de_DE/user_webdavauth.po