Fix #4332 and #4409: Sort issues fixed on the Working Set and Project Tree

Fixes for #4332 and #4409.

On #4409 the issue was that the sort wasn't using the locale string functions that JavaScript Implements on the Project Tree, while I did use them on the Working Set Sort.

On #4409 the problem is that windows sort the files without the file extension, and in brackets we were sorting with the file extension. So now in windows it compares only the file names without the extension.