Noissue - Replace flake8-putty with flake8-per-file-ignores, update to flake8 3 (sitescripts)

sitescripts/templateFilters.py

 # This file is part of the Adblock Plus web scripts,
 # Copyright (C) 2006-present eyeo GmbH
 #
 # Adblock Plus is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 3 as
 # published by the Free Software Foundation.
 #
 # Adblock Plus is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
@@ skipping 169 matching lines @@
         unit = 'MB'
     if value > 1024:
         value /= 1024
         unit = 'GB'
     return '%.2f %s' % (value, unit)
 
 
 def toJSON(value, **args):
     return re.sub(r'</script>', r'<\/script>', json.dumps(value, **args))
 
+
 filters = {
     'formattime': formattime,
     'timerelative': formatrelativetime,
     'url': formaturl,
     'keepnewlines': formatnewlines,
     'filtercount': formatfiltercount,
     'buglinks': formatBugLinks,
     'urlencode': urlencode,
     'subscriptionSort': subscriptionSort,
     'mime': formatmime,
     'emailaddr': email.utils.formataddr,
     'ljust': ljust,
     'rjust': rjust,
     'ltruncate': ltruncate,
     'weekday': formatweekday,
     'bytes': formatbytes,
     'json': toJSON,
 }