title: Change backdrop to static for open bootstrap modal
body: <p>Can I change backdrop to 'static' while my modal is open? </p>
  
  <p>I have modal with form submit button. When I click this button I show loading spinner on my modal and that is the moment when I want to change backdrop to static</p>
  
  <p>I tried <code>$('#myModal').modal({backdrop: 'static', keyboard: false})</code>, but I can still close my modal by clicking the backdrop or using escape button.</p>
  
  <p>Second step should be changing backdrop back to true, but I didn't try this yet, because first I need to set backdrop to static.</p>
  
  <p>I could set backdrop to static on modal show, but I want to avoid this and change it after submit.</p>
  
  <p>Any ideas?</p>