Merge branch 'release/0.8'
add cucumber test and ultilites for rspec
add some commented authentication on controller
change form_for to form_tag for Sessions_path
Merge branch 'hotfix/add_chap8ex' into develop
add user profile edit feature
add authorization for non-signed-users
add feature of requiring the right user
modify controller and helps for a frendly forwarding after a try visiting and signining
Merge branch 'feature/updating-users' into develop