[Qt] small notificator and style changes

- remove default arguments for notificator
- re-order some calls to use same ordering in Qt files
- style police changes (spaces, comments and such)

src/qt/walletview.h

@@ -96,6 +96,7 @@ public slots:
 
     /** Re-emit encryption status signal */
     void updateEncryptionStatus();
+
 signals:
     /** Signal that we want to show the main window */
     void showNormalIfMinimized();