Dan's Weapon Shelves - Sell Weapons The Right Way

1. Added the option to pickup shelves with physgun. ( shelf owner only )

1. Adjusted Render Group ( Text is no longer see through )
2. Added coupon codes for other scripts

1. Added item blacklist
2. Added item max price
3. Optimized networking
4. Fixed network bug

1. Added option to disable "hovering" effect of the weapon info, find this in shared.lua

1. Fixed misspelled var which broke shelf saving

Initial version.