Noissue - Adapt quotes for compliance with our coding style in sitescripts

sitescripts/reports/web/showDigest.py

 # This file is part of the Adblock Plus web scripts,
 # Copyright (C) 2006-2016 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 38 matching lines @@
             cookies = Cookie.SimpleCookie(environ.get('HTTP_COOKIE', ''))
             secret = cookies[id].value
         except (Cookie.CookieError, KeyError):
             return showError('No digest secret', start_response)
 
     if secret != thisweek and secret != prevweek and secret != thisweek_compat and secret != prevweek_compat:
         return showError('Wrong secret', start_response)
 
     path = os.path.join(get_config().get('reports', 'digestPath'), id + '.html')
     if not os.path.exists(path):
-        return showError('Digest doesn\'t exist', start_response)
+        return showError("Digest doesn't exist", start_response)
 
     cookies = Cookie.SimpleCookie()
     cookies[id] = secret
     cookies[id]['path'] = '/'
     cookies[id]['secure'] = True
     cookies[id]['httponly'] = True
     expiration = datetime.utcnow() + timedelta(weeks=2)
     cookies[id]['expires'] = expiration.strftime('%a, %d-%b-%Y %H:%M:%S GMT')
     if redirect:
         start_response('302 Found', [('Location', '/digest?id=' + id), ('Set-Cookie', cookies[id].OutputString())])
         return []
     else:
         start_response('200 OK', [('Content-Type', 'text/html; charset=utf-8'), ('Set-Cookie', cookies[id].OutputString())])
         blockSize = 4096
         f = open(path)
         if 'wsgi.file_wrapper' in environ:
             return environ['wsgi.file_wrapper'](f, blockSize)
         else:
             return iter(lambda: f.read(blockSize), '')
 
 
 def showError(message, start_response):
     template = get_template(get_config().get('reports', 'errorTemplate'))
     start_response('400 Processing Error', [('Content-Type', 'application/xhtml+xml; charset=utf-8')])
     return [template.render({'message': message}).encode('utf-8')]