Improve multiple-sort triggering

[Naruto-kyun]

Description

I have notice that the plugin multiple-sort is not well integrated with manual data management.

For example if you call the methods: filterBy, append, prepend, insertRow, updateRow, updateByUniqueId, updateCell or updateCellByUniqueId, it will trigger the integrated sorting but not the multiple-sort.

Even worse, calling load with some data, it will not trigger sort at all.

So i was wondering if it was an expected behavior, and if it's not i would be happy to propose PR.

Meanwhile i'm using a hack by triggering load-success.bs.table each time i'm doing a manual manipulation of data.

[wenzhixin]

Any pull request is welcome.