small headers ordering cleanup

- keep headers in alphabetical order
- fix Makefile.am (2 files in 1 line - leftover)
- remove some spaces etc.

src/rpcserver.cpp

@@ -8,8 +8,8 @@
 #include "base58.h"
 #include "init.h"
 #include "main.h"
-#include "util.h"
 #include "ui_interface.h"
+#include "util.h"
 #ifdef ENABLE_WALLET
 #include "wallet.h"
 #endif