CMDHELPER-3092 - Reported by PseudoKnight

The HIDE_POTION_EFFECTS enum from Bukkit covers many different meta tooltip information. This is what has been discovered thus far:

• potion meta
• book meta
• music disc author and name
• fireworks meta
• map meta
• stored enchantments

We need to add this to the docs. Thanks to MCmacjuul for reminding me and finding out that music disc info was hidden.

Also, should we change the ENUM in CH to HIDE_OTHER or do you think it's too late? We could support both, I suppose, for inputs and just output HIDE_OTHER. It's unlikely people would write a conditional for hide flags.