Modal should inject .modal-content instead of .modal-body

Created by: mediafreakch

I think that the modal plugin would benefit from the following enhancement:

when the remote option is specified (either using JS or data-remote attribute), the content should be loaded into .modal-content instead of .modal-body .

This would allow folks to customize the modal-header (including title) and footer as well and allow more flexibility and reuse of code...

What do you think?