title: Bootstrap datetime picker stepping not working
body: <p>I have a datetimepicker  with stepping has value 45.But when I increase the minutes ,the hour field increases with 1 hour.</p>
  
  <pre><code>$("#startDate").datetimepicker({ format:'YYYY/MM/DD HH:mm' , locale: g_state_language, useCurrent: false, stepping: 45, defaultDate: false, sideBySide:true });
  </code></pre>
  
  <p>12:00 to 12:45 is working, but 12:45 increase shows 01:45 instead of 01:30</p>