Fix intro gfx and start doccing intro methods

include/intro.h

@@ -1,7 +1,7 @@
 #ifndef GUARD_INTRO_H
 #define GUARD_INTRO_H
 
-void sub_80EC864(void);
+void CB2_CopyrightScreen(void);
 void c2_copyright_1(void);
 
 #endif //GUARD_INTRO_H

include/quest_log.h

@@ -27,7 +27,7 @@ void sub_8111CF0(void);
 void ResetQuestLog(void);
 void ResetTrainerFanClub(void);
 void TrySetUpQuestLogScenes_ElseContinueFromSave(u8 taskId);
-void sub_8112450(void);
+void SaveQuestLogData(void);
 void QuestLog_OnInteractionWithSpecialNpc(void);
 u8 sub_8112CAC(void);
 void sub_81138F8(void);