Untabify every single file

YOLO.

This is a repeat of #642. As before, I just did

    rg -l '\t' | xargs -n 1 sed -i -e 's/\t/    /g'

inside the desktop_version/ folder.

desktop_version/src/Spacestation2.h

@@ -6,8 +6,8 @@
 class spacestation2class
 {
 public:
-	const short* loadlevel(int rx, int ry);
-	std::string roomname;
+    const short* loadlevel(int rx, int ry);
+    std::string roomname;
 };
 
 #endif /* SPACESTATION2_H */