Columns reorder fix, Ember 1.8.1 changed removeObject (Issue #243)

[edelsbrunner]

Ember 1.8.1 is firing some methods from new Morph library when calling removeObject, and this was removing the columns from DOM, causing a null problem.

The problem is described here: #243

Using Jquery grep remove only the column to reorder, and prevent this from happening

[azirbel]

Hi @mariuserik and thanks for bringing this to our attention (and for your fix)!

@ebryn took a look; another description of the underlying problem is that jQuery sortable and ember both want to manipulate the DOM. His solution is to cancel jQuery so Ember can do its thing: #265. I think we'll go with this approach, which should still fix your issue. Let us know if you have any objection!

[edelsbrunner]

Awesome, LGTM.