Merge branch 'master' into fix_3728_with_file_exists_dialog

apps/files/css/files.css

apps/files/l10n/ca.php

apps/files/l10n/es.php

apps/files/l10n/et_EE.php

apps/files/l10n/gl.php

apps/files/l10n/pl.php

apps/files_encryption/l10n/es.php

apps/files_sharing/l10n/es.php

apps/files_trashbin/l10n/es.php

apps/files_trashbin/l10n/pl.php

apps/files_versions/l10n/es.php

apps/user_ldap/l10n/es.php

apps/user_ldap/l10n/fr.php

apps/user_webdavauth/l10n/es.php

apps/user_webdavauth/l10n/fr.php

core/l10n/ca.php

core/l10n/es.php

core/l10n/pl.php

core/l10n/tr.php

core/lostpassword/controller.php