use wallet basename in window title

gui/qt/main_window.py

@@ -210,7 +210,7 @@ class ElectrumWindow(QMainWindow):
         self.invoices = self.wallet.storage.get('invoices', {})
         self.accounts_expanded = self.wallet.storage.get('accounts_expanded',{})
         self.current_account = self.wallet.storage.get("current_account", None)
-        title = 'Electrum ' + self.wallet.electrum_version + '  -  ' + self.wallet.storage.path
+        title = 'Electrum ' + self.wallet.electrum_version + '  -  ' + os.path.basename(self.wallet.storage.path)
         if self.wallet.is_watching_only(): title += ' [%s]' % (_('watching only'))
         self.setWindowTitle( title )
         self.update_wallet()