Browsing Manx translation

Translators:
This controls whether the GNOME panel clock should display time in 24 hour mode
or 12 hour mode by default. The only valid values for this are "24-hour" and
"12-hour". If your locale uses 24 hour time notation, translate this to "24-hour".
If your locale uses 12 hour time notation with am/pm, translate this to "12-hour".

Do NOT translate this into anything else than "24-hour" or "12-hour". For example,
if you translate this to "24 sata" or anything else that isn't "24-hour" or
"12-hour", things will not work.