[FEATURE] Role permission to view post edit history


The role permissions for threads within group discussion forums have been a great addition, thanks again for adding them. :)

I've had one request come up which seems sensible enough, for another permission: the ability to view post edit history. I checked briefly for the core XenForo permission which allows moderators to access that History feature for edited posts, and I'm not sure which one it is. It would be handy, though.