add multiple pages for /skin nearby items

[YetiBacklash]

Can be wonky trying to get the item you want to appear in the limited view when you have more than the designated number of skinned items nearby. ability to scroll through all nearby items would be nice  

[Elixil3]

I did not realise that was an issue until I tried skinning a door last night and it wasn't loading because of all the other skinnable items within my radius. Either a paginator or maybe reduce the radius it looks at will help this situation.

[Death]

The new scrollbar element is tricky, but once I figure it out this will be in the next update.