Added some comments to the ScratchController class.
Removed an unused import from the ScratchConfiguration class.
Updated the comments in the ScratchController class.
Added comments to the User class.
Updated the logging levels for Spring and Hibernate to WARN.
Updated the User class so that it's UserRepository dependency is now injected as static.
Updated the ScratchController class to use the new User.all() static method.
Merge branch 'master' of github.com:karlbennett/scratch-webapp