PCA Perms 0.1.1 (PCA mod permissions)

New

• The teacher group starts with the new permissions in PCA Puzzle 0.3.2 (pcapuzzle.build, items, unlock), PCA Puzzle Plots 0.1.1 (pcapuzzleplots.use) and PCA Currency 0.1.2 (pcacurrency.balance, admin).
• A permissions.json from 0.1.0 gets these once when the server starts. Any rule you've already set for them is left as it is.