[Qt] header group cleanup

- seperate core from GUI headers where this was missing
- remove an unneeded new-line

src/qt/bitcoin.cpp

@@ -107,7 +107,6 @@ static QString GetLangTerritory()
 /** Set up translations */
 static void initTranslations(QTranslator &qtTranslatorBase, QTranslator &qtTranslator, QTranslator &translatorBase, QTranslator &translator)
 {
-
     // Remove old translators
     QApplication::removeTranslator(&qtTranslatorBase);
     QApplication::removeTranslator(&qtTranslator);