old_contents: DATE_FORMAT = 'l d F Y'
  SHORT_DATE_FORMAT = 'Y-m-d'
  TIME_INPUT_FORMATS = ( '%H%M', '%H:%M' )
  
new_contents: DATE_FORMAT = 'l d F Y'
  SHORT_DATE_FORMAT = 'Y-m-d'
  TIME_INPUT_FORMATS = ( '%Hh%M', '%H:%M', '%H%M', '%Hh' )
  
subject: add 17h30 and 17h to input time formats