This is a follow up to I34ace0aeb3e23d8f6a8c5a8680bb492f37e343ad
On Special:Userlogin a "more" menu appears that's visible but empty
that should not
Bug: T306229
Change-Id: I9384b3015de9991db41bde8ccc8f404ac533f198
Remove JavaScript that collapses tabs and replace with an easier
to maintain breakpoint based solution.
Tabs will now collapse below the tablet breakpoint
Note: In the case of mw.util.addPortletLink, to add items to the
`views` menu, these will not be collapsed into the more menu and
must now be explicitly added to both menus, ie. if the window is
resized these will hide and not appear in the more menu.
However, when mw.util.addPortletLink attempts to add to `views` menu
when there is not available space, we will redirect those links to
the more (`cactions`) dropdown menu.
Bug: T306229
Change-Id: I34ace0aeb3e23d8f6a8c5a8680bb492f37e343ad
