docs: def _save_translations(sender, instance, *args, **kwargs):
  	"""
  	This signal saves model translations.
  	"""
  	
  	# If we are in a site with one language there is no need of saving translations
  	if site_is_monolingual():
  		return False
  
  	cls = sender
  
  	# If its class has no "translatable_fields" then there are no translations
  	if not hasattr(cls._meta, "translatable_fields"):
  		return False
  
  	# For each translatable field, get its value, computes its md5 and for each language creates its
  	# empty translation.
  	for field in cls._meta.translatable_fields:
  		value = getattr(instance,field)
  		if not value is None:
  			md5_value = checksum(value)
  			setattr( instance, u"md5"+field, md5_value )
  			for lang in settings.LANGUAGES:
  				lang = lang[0]
  				# print "({0}!={1}) = {2}".format(lang, settings.LANGUAGE_CODE,lang!=settings.LANGUAGE_CODE)
  				if lang != settings.LANGUAGE_CODE:
  					context = u"Updating from object"
  					if hasattr(instance, "trans_context"):
  						context = getattr(instance, "trans_context")
  					trans = FieldTranslation.update(instance, field, lang, context)