dragable column config option

[Condor]

There are several users who would like the ability to disable dragging of certain columns in a grid.

It was originally asked here (http://www.extjs.com/forum/showthread.php?t=53666) (including solution) and I referred several users to this thread.

[mystix]

+1

renaming it to allowDrag or enableDrag would definitely prevent typos though.

[evant]

The issue with this is that usually when they want to disable drag of a particular column, they want it to be fixed. This means also possibly modifying the drop logic to exclude these columns as well.