PEP9 whitespace related fixes.

Still things to fix (need advise on):
W1401:  L70: Anomalous backslash in string: '\W'. String constant might be missing an r prefix. (many of these)
W0403:  L30: Relative import 'name_parser.parser', should be 'sickbeard.name_parser.parser'
Ignore *subfix* releases, example: ```Boardwalk.Empire.S03E01.SUBFIX.720p.BluRay.x264-DEMAND``` or ```True Blood S03 SUBFIX 720p BluRay X264-REWARD```
Merge pull request #716 from thezoggy/dev--subfix

Ignore SUBFIX releases