feat(style): Add class to reset button default styling

There is a class .reset-button to get rid of button default styling.
fix(users) : Fix user detail display

Fix null padding and space around users detail header part
fix(users) : SD-94 - Some CSS fixes are needed
fix(auth) : SD-93 - style server connection error on login page

add fixes for styling network errors
fix(auth): fix disabled login btn on init

when storing credentials in browser there is no way to login
while the button stays disabled. so instead it's only disabled
when communicating with server
fix(users): set resource headers on POST to get generated values
fix(users): hide close preview btn when there is no user selected