[kdev4] appwizard

[Bernd Buschinski]

A very small appwizard improvement to give it some basic functions.
I changed the logic a bit, now it creates a new directory for a new 
project(like kdev3 did).
I am not sure about the QSignalMapper in appwizarddialog.cpp, I had to add 
some setMapping to receive a signal.

If this patch is correct please commit it, as I dont have a svn account.
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