[0.15] Blueprints autoplace by character

[danyg]

Basically I think what this mod does https://mods.factorio.com/mods/Mylon/Bluebuild should be vanilla, since the blueprints are available early in the game, makes totally sense that when the character approach to a ghost element, place it by itself, slowly of course.
I found myself using blueprints much earlier now, and I found really tedious to place it by my own, with sometime making mistake without placing some item since I cannot distinguish very well what is ghost and what is not (specially with yellow inserters)

Thanks for this amazing game, you are doing it great.