Add a "flattenElement" Function in Ext.Element

[crp_spaeth]

While reading the sourcecode of the new Google API Closure I found a few nice Additions that may could find there way into the Extjs lib.

One Thing I needed a while ago was the posibility to "unwrap" an Element i previosly wrapped with the wrap function of Ext.Element. Correct me if I am wrong but it not part of Ext.Element yet.

I moved the wrapped elemen one element up the tree and destroyed the wrap element.

This function is part of the goog closure api.

They call it flattenElement.

The Implementation can be found here:

http://closure-library.googlecode.co...e.html#line897