unit_marker.lua doesn't include hours in marker time

[Hawkybird]

Line 272, marker text only includes minutes and seconds, should probably include hours if the game time is over an hour.

Zero-K/LuaUI/Widgets/unit_marker.lua

Line 272 in e94a5d5

markerText = markerText .. " (" .. math.floor(100 * buildProgress) .. "% at " .. os.date( "%M:%S", spGetGameSeconds()) .. ")"