update the page's CSRF tokens with the new token
from the response header,
verify csrf token in ajax endpoints,
initialize a session for every endpoint
the command `ip address show eth0` returns
special characters like "<" and ">" which, if left
unescaped and shown on the page, will create
arbitrary html elements and hide information.
* show interface settings inside unstyled pre block
interface properties should be parsed and displayed
in a proprietary and pretty manner. until then, give
use the raw output of `ip address show`
