Update jquery.dragtable.js

Now the original <th> and the generated <li> have the same width.
Update jquery.dragtable.js

Added redraw() function. This allows you to dynamically generate columns and make them orderable just calling $('#your-table').dragtable('redraw');
Merge branch 'master' of https://github.com/destinomultimedia/dragtable into destinomultimedia-master

Conflicts:
	jquery.dragtable.js