Kit concrete

[Eagler1997]

Original idea was from Elisthetic. But from the moment it's possible (not sure if concrete works with the outdated essentials, if not see this as a long term feature request.)

The idea was to add a kit concrete just like kit wool with all of the colors of concrete. It's getting to the point that it is used quite frequently and it looks very nice.

Thanks for considering it

[Demoncrusher]

Is it not possible to buy gravel and sand from people who sell it? I think many people overlook that fact and there's a certain shop at Market that sells a stack of gravel for 32$ I believe

[Eagler1997]

I know we can craft it, same goes for the other kits, I feel like it's a nice addition to also actualise the kits to 1.13