+ added RHSignItem.unsign permission
I've added this in order to seperate the RHSignItem.use permission node into sign and unsign.
Credits for this update to Hemanth, who came up with this idea:
You can still use RHSignItem.use instead of RHSignItem.sign, but you have to grant RHSignItem.unsign seperatly to players in order to remove a signature!
I hope, that you enjoy my plugin!
If so please consider leaving a review!