Added translade method to Camera and it's test.
created public/images folder
created can_go_left? and can_go_right?
some modifications in front end, such as bootstrap elements
Some front-end adjustments...
Changed root_to page...
Merge branch 'translading_logic' into frontend

Conflicts:
	sav-server/app/views/layouts/application.html.erb
	sav-server/config/routes.rb
	sav-server/public/index.html
Removed scaffolds.css.scss