Add model objects for User, Level Progression, and Study Queue
Move date calculation into model object
Merge branch 'refs/heads/feature/user-model' into develop
Validate project settings
Remove SBJSON dependency
Reformat LaunchAtLoginController
Update format
Merge branch 'refs/heads/feature/remove-sbjson' into develop
Implement KVO for profile menu item
Implement bindings for user panel
Update credits, minor code clean up
Merge branch 'refs/heads/develop'