Issue 5618 - Adds fallback to unlocalized paths for files in static dir

cms/sources.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 37 matching lines @@
 
         if self.has_localizable_file(default_locale, page):
             if not self.has_localizable_file(locale, page):
                 locale = default_locale
         elif self.has_page(page):
             if not self.has_locale(locale, page):
                 locale = default_locale
         elif self.has_page(alternative_page):
             if not self.has_locale(locale, alternative_page):
                 locale = default_locale
+        elif self.has_static(page):
+            locale = None
         else:
             logging.warning('Link to %s cannot be resolved', page)
 
         parts = page.split('/')
         if parts[-1] == default_page:
             page = '/'.join(parts[:-1])
-
-        path = '/%s/%s' % (locale, page)
-        return locale, urlparse.urlunparse(parsed[0:2] + (path,) + parsed[3:])
+        if locale:
+            path = '/{}/{}'.format(locale, page)
+            return locale, urlparse.urlunparse(parsed[0:2] + (path,) + parsed[3:])
+        return locale, '/' + page
 
     def read_config(self):
         configdata = self.read_file('settings.ini')[0]
         config = ConfigParser.SafeConfigParser()
         config.readfp(StringIO(configdata))
         return config
 
     def exec_file(self, filename):
         source, filename = self.read_file(filename)
         code = compile(source, filename, 'exec')
@@ skipping 368 matching lines @@
             'resolve_link',
             'read_config',
             'read_template',
             'read_locale',
             'read_include',
             'exec_file',
         ]:
             setattr(source, fname, _memoize(getattr(source, fname)))
 
     return source