Demo validation API.
Test the new Scout @loop, @query
Update theme screenshot image.
Update theme screenshot.
'app' folder contains all the application files. Change some configuration and constants.
Clean comments and inline docs.
Merge branch 'refs/heads/dev'

Conflicts:
	app/config/controllers.config.php
	app/controllers/SampleController.php
	app/routes.php
	app/views/home.scout.php
	app/views/pages/front.scout.php
	app/views/pages/sample.scout.php
Fix merge conflicts.
Remove test files.