Fix Scaffolding Placement

I was using scaffolding, when I noticed that instead of acting like a regular block, it branched out in the direction I was looking. Being used to placing blocks on the side you click on, I was confused and it took me a while to figure it out. 

In order to make it less confusing, here's an idea: scaffolding places like a regular block, unless your on top of one, in which it places the direction you're looking, like the current way. This way, scaffolding isn't as difficult to place, but still has the functionality the current one was going for.