Revert "Project modernization (#630)"

This code was not tested and breaks in Release builds, reverting to restore
functionality of the nightly. All in-game menus do not work and generating
a world crashes.

This reverts commit a9be52c41a.

Minecraft.World/JavaMath.cpp

@@ -36,7 +36,7 @@ double Math::random()
 //the value of the argument rounded to the nearest long value.
 int64_t Math::round( double d )
 {
-	return static_cast<int64_t>(floor(d + 0.5));
+	return (int64_t)floor( d + 0.5 );
 }
 
 int Math::_max(int a, int b)