Datacron mk2 upgrade mats

Hey CG

With the change to only getting a single conquest to farm a datacron set and its associated materials, I really think it is time to add the mk2 upgrade materials to the shop for shard shop currency.

Every other material can be bought with shard shop currency, but the biggest limiter, mk2, is only available for ally points and crystals. It's been a strange anomaly the whole time, but now would be a good time to fix that.