[tx-robot] updated from transifex

apps/files_encryption/l10n/en_GB.php

apps/files_encryption/l10n/fr.php

apps/files_encryption/l10n/sl.php

apps/files_encryption/l10n/tr.php

apps/files_external/l10n/sl.php

core/l10n/sl.php

l10n/ar/files.po

l10n/ar/files_external.po

l10n/ar/files_sharing.po

l10n/ar/files_trashbin.po

l10n/ast/files.po

l10n/ast/files_external.po

l10n/ast/files_sharing.po

l10n/ast/files_trashbin.po

l10n/bg_BG/files.po

l10n/bg_BG/files_external.po

l10n/bg_BG/files_sharing.po

l10n/bg_BG/files_trashbin.po

l10n/bn_BD/files.po

l10n/bn_BD/files_external.po