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/SignUpdatePacket.cpp

@@ -66,6 +66,6 @@ int SignUpdatePacket::getEstimatedSize()
 	l+=sizeof(byte);
 
 	for (int i = 0; i < MAX_SIGN_LINES; i++)
-		l += static_cast<int>(lines[i].length());
+		l += (int)lines[i].length();
 	return l;
 }