ShopShelves

Big Changelog:

• World Guard support allow-shop flag for convenience using same flag as other shop plugins for easy migration.
• World list in config now accepts a list of worlds that allow the shops to work in when list is empty all worlds allow shops.
• Shop Labels the custom price gui now allows changing your shops name!
• Players can now see the actuall shelf block contents by shift right clicking the name of the shop to open a GUI.
• Custom price chat input now accepts an item amount.
• New permissions: shopshelves.setlabel, shopshelves.setlabel.color, shopshelves.playershelf.worlds, shopshelves.playershelf.