title: Bug in Full calendar in getDate comment
body: <p>i am using arshaw fullcalendar("FullCalendar v1.6.4") in that i use  date-picker for jump date in week view
  this is my code..</p>
  
  <pre><code>$('.calendar2').fullCalendar( 'gotoDate',new Date($scope.jump));
  </code></pre>
  
  <p>then i click next button calender move to next week in that button click i am getDate 
  ie)</p>
  
  <pre><code>`$(document).on("click", ".fc-button-next", function(){`
   var d = $('.calendar2').fullCalendar('getDate');
  console.log(d);
  })
  </code></pre>
  
  <p>it wont give Monday date it give </p>
  
  <p>if i select Tuesday in jump date-picker it gives Tuesdays date for that (var d) not monday date of the week  </p>
  
  <p>is there any solution tell me....</p>