Add a numbe of features in connection with the fetch_method 'file'.

Begin fetch_method file implementation. 
Adjust log levels of github and urllib3. 
Add a storage directory config variable.
Correct minor bug in auth file and patches location
Refactor out file list filtering.
Refactor my_config to shorter cfg.
In PRHandler.__init__(), raise Exceptions instead of bailing with sys.exit.
Add a temporary workaround for getting the Styler files.
Add API calls remaining to log. Minor refactoring.
Revert strange workaround for queue and web.py scope issue.
Factor out styleguard into its own file.
Ecapsulate PrHandler better.