format adjusted
add test cases for edit page
modified logo
add action edit
add test case for href to edit_user_path after signin
add link to edit_user_path to Settings
render error msg with invalid update info
add test cases for edit with valid info
add action when updated successfully
add test cases for authorization for non-signed-in users
check sign_in? when edit/update
modify test case after registration for edit
add test cases

authorization as wrong user
check current_user? when edit/update
find user completed in correct_user, not neccessary in edit/update
add test cases

more friendly redirection
redirect to better page
new action index
add test cases

for action index
add action index