[Qt] style-police, add missing license headers

- add missing license headers in Mac files
- small code formating cleanups

src/qt/walletmodel.cpp

@@ -6,8 +6,8 @@
 
 #include "addresstablemodel.h"
 #include "guiconstants.h"
-#include "transactiontablemodel.h"
 #include "recentrequeststablemodel.h"
+#include "transactiontablemodel.h"
 
 #include "base58.h"
 #include "db.h"