Enable/Disable uploading custom designs for specific stores

This would allow one website to offer full customization for customers, using either their own uploads or our stock designs, while other stores are limited to certain images from the library. 

Example: 
Main store is open to public, offers custom shirts. 

Secondary store is for private company that provides uniforms for a family of brands (customers choose appropriate logo from pre uploaded designs), without allowing more customization.

Third store is for hockey team that allows parents to add last names and numbers for jerseys, without allowing more customization.