update "Search Mode:" log line in all providers to use .format

sickbeard/providers/alpharatio.py

sickbeard/providers/bitsnoop.py

sickbeard/providers/bitsoup.py

sickbeard/providers/bluetigers.py

sickbeard/providers/btdigg.py

sickbeard/providers/cpasbien.py

sickbeard/providers/danishbits.py

sickbeard/providers/elitetorrent.py

sickbeard/providers/extratorrent.py

sickbeard/providers/freshontv.py

sickbeard/providers/gftracker.py

sickbeard/providers/hd4free.py

sickbeard/providers/hdspace.py

sickbeard/providers/hdtorrents.py

sickbeard/providers/hounddawgs.py

sickbeard/providers/iptorrents.py

sickbeard/providers/kat.py

sickbeard/providers/limetorrents.py

sickbeard/providers/morethantv.py

sickbeard/providers/newpct.py