DataTables/ColReorder — pull request #17 by Brilliand (2014-06-03 17:07:12+00:00)
Title: Sped up DataTable loading when heavy sorting is involved

Had some trouble with "api.rows().invalidate()" causing
an exponentially increasing slowdown when loading a
heavily reordered table. Changed _fnOrderColumns to
call that function (and a few other "refresh all" functions)
only once.