Issue 2935 - Give get_string page parameter a sensible default value

cms/converters.py

 # coding: utf-8
 
 # This file is part of the Adblock Plus web scripts,
 # Copyright (C) 2006-2015 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,
@@ skipping 344 matching lines @@
     result = unicode(module)
     result = self.process_links(result)
     return result
 
   def translate(self, default, name, comment=None):
     return jinja2.Markup(self.localize_string(
       self._params["page"], name, default, comment,
       self._params["localedata"], html_escapes
     ))
 
-  def get_string(self, name, page):
+  def get_string(self, name, page=None):
+    if page is None:
+      page = self._params["page"]
+
     localedata = self._params["source"].read_locale(self._params["locale"], page)
     default = localedata[name]
     return jinja2.Markup(self.localize_string(
       page, name, default, "", localedata, html_escapes
     ))
 
   def get_page_content(self, page, locale=None):
     from cms.utils import get_page_params
 
     if locale is None:
@@ skipping 29 matching lines @@
         stack.pop()
       stack[-1]["subitems"].append(item)
       stack.append(item)
     return structured
 
 converters = {
   "html": RawConverter,
   "md": MarkdownConverter,
   "tmpl": TemplateConverter,
 }