Finally fix time till next recording.

Finally fix time till next recording.

The Delta_Format method sometimes uses negative numbers, like:

Next Recording In: 1 Day, -1 Hour, -34 Minutes

This is painful to try and pass. This commit finally resolves this long
standing annoyance and now uses:

Next Recording In: 22 Hours, 25 Minutes

Thanks David for the patch, I was about to fix this myself once and for
all when I re-discovered your patch.