Backport translations from master
1) i18n-sync to sync 19.07 itself
2) i18n-merge-master to backport from master
3) i18n-sync to clean-up, as merge-master makes also errors
4) revert luci-app-samba that gets mishandled (removal from master causes ???)
Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>