Change Url Mapping
Unfinished album controller
Update Store Controller
Add artist dependency
Remove delete function, change belongsTo dependency
Depends on User. Create an album. Use removeFrom function
Clean up Song class
Remove email string, add hasMany purchasedSongs, use addTo and removeFrom methods
Main gsp file updated
Update Inventory, ShoppingCart and User tests
Add Admin domain
Add Artist domain
Add Store and User views
Admin controller
Inventory controller
Shopping Cart controller
Finish adding test files