Fix switching when no miner running
Fix switching when no miner running

If no miner was running and the profitability score was similar, the
switcher didn't do anything.
It will now run the first algo in this case.

Fixes #2

barrybingo/trademybit-switcher,macbackfat/trademybit-switcher,whelgeson/trademybit-switcher,0uranos/trademybit-switcher