Update LoadProgressManager

- Fix incorrect field names
- Add references to loading screen palettes

Author: Starkku

LoadProgressManager.h

@@ -11,6 +11,8 @@ class LoadProgressManager
 {
 public:
 	DEFINE_REFERENCE(LoadProgressManager*, Instance, 0xABC9BCu)
+	DEFINE_REFERENCE(ConvertClass*, LoadScreenPal, 0xB0FB88u)
+	DEFINE_REFERENCE(BytePalette*, LoadScreenBytePal, 0xB0FB84u)
 
 	LoadProgressManager()
 		{ JMP_THIS(0x552A40); }
@@ -24,16 +26,16 @@ class LoadProgressManager
 	DWORD field_4;
 	DWORD field_8;
 	RectangleStruct TitleBarRect;
-	RectangleStruct BackgroundRect;
-	RectangleStruct LoadBarRect;
+	RectangleStruct LoadBarSHPRect;
+	RectangleStruct LoadScreenSHPRect;
 	wchar_t* LoadMessage;
 	wchar_t* LoadBriefing;
 	SHPStruct * TitleBarSHP;
+	SHPStruct * LoadScreenSHP;
 	SHPStruct * LoadBarSHP;
-	SHPStruct * BackgroundSHP;
 	bool TitleBarSHP_loaded;
+	bool LoadScreenSHP_loaded;
 	bool LoadBarSHP_loaded;
-	bool BackgroundSHP_loaded;
 	DWORD field_54;
 	DWORD field_58;
 	DWORD field_5C;