when time column present, date column not present -> adjust times

[jtorjo]

Just in case the log entries span over several days, ilke (before and after midnight), in this case, I need to adjust dates.

Basically, the line.time is computed correctly, but the date will always be today. When going to a certain time (ctrl-g), we would then compute the destination wrongly, since we perform a binary search, and our list is not sorted correctly.