webtrees - en to en-US translation catalogue (2 entries)

note: I18N: This is the format string for the time-of-day. See https://php.net/date for codes
en: %H:%i:%s
en-US: %g:%i:%s %a

note: I18N: This is the format string for full dates. See https://php.net/date for codes
en: %j %F %Y
en-US: %F %j, %Y
