Wiki should be updated with this new css

[uaevuon]

After FF133, current css files under completely hide native tabs strip on wiki do not work.

Only this css is needed.

[riveravaldez]

In case it's relevant: on updated Firefox release, setting vertical tabs and up-left button to "hide/show" allows for Sidebery to be the only visible vertical tabs interface, as long as the user resizes Firefox vertical tabs to zero size.
This is how it looks: