We want to flip the default of visualeditor-enable to true, but don't
necessarily want to turn it on for users who already have contributions but who
haven't already enabled it. Therefore we're considering adding such users to
this autodisable preference which they can self-remove (by explicitly enabling
VE) or we can target later, separate from betatempdisable users.
Bug: T112352
Change-Id: I1ce5e6c92055e30fdc82bc912a767e913b190ef6
Collapsible relates to the Vector menu behaviour where an item
is moved into the dropdown menu if the window is narrow.
This should only apply to the secondary tab when there are two tabs.
If there is only one tab (non-VE, e.g. in a non-VE namespace) then
this tab should not be collapsible.
Server-side code handled this correctly, but client-side was
adding the class unconditionally.
Change-Id: Iecd195e92f43fe9f11b3938a1a24caed7b331e5f
