currentUser into routes and controllers via Session

app-session.js

App.AppSession = SimpleAuth.Session.extend({
    currentUser: Ember.computed('userId', function () {
        var userId = this.get('userId');
        if (!Ember.isEmpty(userId)) {
            return this.container.lookup('store:main').find('user', userId);
        }
    })
});

route.js

App.ApplicationRoute = Ember.Route.extend({
  currentUser: Ember.computed.alias(this.get('session.currentUser'));
});

simple-auth-initializer.js

/*
 * Ember Simple Auth ServiceStack CredentialsProvider Authenticator and Authorizer
 */
Ember.Application.initializer({
    name: 'simple-auth-servicestack',
    before: 'simple-auth',
    initialize: function(container, application) {
        container.register('session:custom', App.AppSession);
        container.register('authorizer:servicestack', App.SimpleAuthServiceStackCredentialAuthorizer);
        container.register('authenticator:servicestack', App.SimpleAuthServiceStackCredentialAuthenticator);

        // Init the ENV var
        window.ENV = window.ENV || {};

        // Simple Auth config
        window.ENV['simple-auth'] = {
            session: 'session:custom',
            authenticationRoute: 'login',
            routeAfterAuthentication: 'application.home',
            routeIfAlreadyAuthenticated: 'application.home',
            store: 'simple-auth-session-store:cookie',
            authorizer: 'authorizer:servicestack'
        };
    }
});

user-model.js

App.User = DS.Model.extend({
    uniqueId: string,
    userName: string,
    password: string,
    firstName: string,
    lastName: string,
    emailAddress: string,
    employeeNumber: string,
    department: string,
    jobPosition: string,
    isActive: bool,

    clearActivation: bool,
    activationId: string,
    activationExpires: string,
    profilePictureUrl: string,

    passwordResetId: string,
    passwordReset: bool,
    clearPasswordReset: bool,
    lastPasswordResetBy: DS.belongsTo('user', { async: true, inverse: null }),
    lastPasswordResetDate: string,

    createdBy: DS.belongsTo('user', { async: true, inverse: null }),
    createdDate: string,

    modifiedBy: DS.belongsTo('user', { async: true, inverse: null }),
    modifiedDate: string,

    // soft delete
    isDeletedFromApplication: bool,
    deletedBy: DS.belongsTo('user', { async: true, inverse: null }),
    deletedDate: string
});