Cleanup and document learn_move

include/learn_move.h

@@ -2,6 +2,6 @@
 #define GUARD_LEARN_MOVE_H
 
 void TeachMoveTutorMove(void);
-void sub_816137C(s32);
+void ShowHideHearts(s32);
 
 #endif //GUARD_LEARN_MOVE_H

include/pokenav.h

@@ -1,6 +1,7 @@
 #ifndef GUARD_POKENAV_H
 #define GUARD_POKENAV_H
 #include "player_pc.h"
+#include "list_menu.h"
 
 bool8 sub_81D5C18(void);
 bool8 sub_81D20BC(void *arg0);