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`
Use ajax for getting bandwidth data.
Added support for adding extra scripts in footer if needed.
Signed-off-by: D9ping <D9ping@users.noreply.github.com>