translating g, text, use is invalid in remapElement

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There is a code in remapElement:

var existing = transformListToTransform(selected).matrix,
t_new = matrixMultiply(existing.inverse(), m, existing);

but transformListToTransform need to be passed a transformList of an element 
instead of element itself.
So, <existing> is always an identity matrix. won't work well.

I have changed this as:
 var chlist = getTransformList(selected);
 var existing = transformListToTransform(chlist).matrix;
 var t_new = matrixMultiply(existing.inverse(), m, existing);

This will handle translate correctly if I directly call remapElement.
However, If I drag a <use> object on the screen, position change now cause 
error. I guess because of this bug, recalculateAllDimensions handles this 
problem locally (as quick patch), so double correction
occurs. I suggest add new (default false) argument to remapElement,
and change action. If one wants non-buggy action, pass additional
true argument.

Original issue reported on code.google.com by psh....@gmail.com on 25 Jan 2014 at 7:06