Modify style sheet by using scss format.
Add actions to statis_pages controller.
	about action
	contact action
	help action
Add test code for the following pages.
	/home
	/about
	/help
	/contact
	/
Add utility file including full_title funciton.

Shorten test code for static_pages.
Initialize user controller.
Add test code for user page.

Shorten test code using let().
Add test for full_title helper.