Issue 2133 - Allow to specify default translation inline in pages rather than in a separate file

cms/sources.py

Index: cms/sources.py
===================================================================
--- a/cms/sources.py
+++ b/cms/sources.py
@@ -37,17 +37,17 @@ class Source:
 
     checked_page = page
     if config.has_option("locale_overrides", page):
       checked_page = config.get("locale_overrides", page)
 
     if self.has_localizable_file(default_locale, checked_page):
       if not self.has_localizable_file(locale, checked_page):
         locale = default_locale
-    elif self.has_locale(default_locale, checked_page):
+    elif self.has_page(checked_page):
       if not self.has_locale(locale, checked_page):
         locale = default_locale
     else:
       print >>sys.stderr, "Warning: Link to %s cannot be resolved" % page
 
     if page == default_page:
       page = ""
 
@@ -69,18 +69,25 @@ class Source:
     return "pages/%s.%s" % (page, format)
 
   def list_pages(self):
     for filename in self.list_files("pages"):
       root, ext = os.path.splitext(filename)
       format = ext[1:].lower()
       yield root, format
 
-  def has_page(self, page, format):
-    return self.has_file(self.page_filename(page, format))
+  def has_page(self, page, format=None):
+    if format is None:
+      from .converters import converters
+      return any(
+        self.has_page(page, format)
+        for format in converters.iterkeys()
+      )
+    else:
+      return self.has_file(self.page_filename(page, format))
 
   def read_page(self, page, format):
     return self.read_file(self.page_filename(page, format))
 
   #
   # Localizable files helpers
   #