merge master into filesystem

apps/files/ajax/autocomplete.php

apps/files/appinfo/filesync.php

apps/files/appinfo/remote.php

apps/files/appinfo/update.php

apps/files/download.php

apps/files/l10n/ar.php

apps/files/l10n/bg_BG.php

apps/files/l10n/ca.php

apps/files/l10n/cs_CZ.php

apps/files/l10n/de.php

apps/files/l10n/de_DE.php

apps/files/l10n/eo.php

apps/files/l10n/es.php

apps/files/l10n/eu.php

apps/files/l10n/fa.php

apps/files/l10n/fi_FI.php

apps/files/l10n/fr.php

apps/files/l10n/gl.php

apps/files/l10n/he.php

apps/files/l10n/hu_HU.php