Merge in master

apps/files/ajax/download.php

apps/files/css/files.css

apps/files/js/files.js

apps/files/l10n/cs_CZ.php

apps/files/l10n/da.php

apps/files/l10n/de.php

apps/files/l10n/de_DE.php

apps/files/l10n/es.php

apps/files/l10n/lv.php

apps/files/l10n/nb_NO.php

apps/files/l10n/nl.php

apps/files/l10n/pt_BR.php

apps/files/l10n/pt_PT.php

apps/files/l10n/sv.php

apps/files/l10n/uk.php

apps/files/templates/admin.php

apps/files_encryption/appinfo/app.php

apps/files_encryption/l10n/nb_NO.php

apps/files_external/appinfo/app.php

apps/files_external/l10n/nb_NO.php