[Qt, Trivial] fix header groupings + space, intdentation fixes

src/qt/bitcoingui.cpp

@@ -164,7 +164,7 @@ BitcoinGUI::BitcoinGUI(const NetworkStyle *networkStyle, QWidget *parent) :
 
     // Create status bar
     statusBar();
-    
+
     // Disable size grip because it looks ugly and nobody needs it
     statusBar()->setSizeGripEnabled(false);