old_contents: from django.conf import settings
  from django.conf.locale.en import formats
  
  # Override the regular locale settings to support 24 hour time.
  if settings.USE_24_HOUR_TIME_FORMAT:
      DATETIME_FORMAT = 'N j, Y, H:i:s'
      TIME_FORMAT = 'H:i:s'
      DATETIME_INPUT_FORMATS = [
          '%m/%d/%Y %H:%I:%S'     # '10/25/2006 14:30:59'
          '%m/%d/%Y %H:%I'        # '10/25/2006 14:30'
      ]
  else:
      # These formats are added to support the locale style of Baby Buddy's
      # frontend library, which uses momentjs.
      DATETIME_INPUT_FORMATS = [
          '%m/%d/%Y %I:%M:%S %p',  # '10/25/2006 2:30:59 PM'
          '%m/%d/%Y %I:%M %p',     # '10/25/2006 2:30 PM'
      ]
  
  # Append all other input formats from the base locale.
  DATETIME_INPUT_FORMATS.append(formats.DATETIME_INPUT_FORMATS)
  
new_contents: from django.conf import settings
  from django.conf.locale.en import formats
  
  # Override the regular locale settings to support 24 hour time.
  if settings.USE_24_HOUR_TIME_FORMAT:
      DATETIME_FORMAT = 'N j, Y, H:i:s'
      DATETIME_INPUT_FORMATS = [
          '%m/%d/%Y %H:%I:%S'     # '10/25/2006 14:30:59'
          '%m/%d/%Y %H:%I'        # '10/25/2006 14:30'
      ]
      SHORT_DATETIME_FORMAT = 'm/d/Y G:i:s'
      TIME_FORMAT = 'H:i:s'
  else:
      # These formats are added to support the locale style of Baby Buddy's
      # frontend library, which uses momentjs.
      DATETIME_INPUT_FORMATS = [
          '%m/%d/%Y %I:%M:%S %p',  # '10/25/2006 2:30:59 PM'
          '%m/%d/%Y %I:%M %p',     # '10/25/2006 2:30 PM'
      ]
  
  # Append all other input formats from the base locale.
  DATETIME_INPUT_FORMATS.append(formats.DATETIME_INPUT_FORMATS)
  
subject: Add SHORT_DATETIME_FORMAT format (#148)