Added ability to see all racks a takeaway is assigned to
When you click a rack a takeaway is assigned to it is a link back to that rack
Client and Brochure Rack name duplication prevention
Made a takeaway unique to a client, and cleaned up the takeaway_spec
Cleaned up all the models
Made takeaway name show the client before it on the takeaway show page
Made the client name and takeaway name appear in the drop down on the placement form
Conflicts resolved with master
Added use of takeaway decorator throughout app