In WikimediaUI theme, the height of the toolbar is defined with
'padding-top', but in Apex theme, it is defined with 'height'.
Set both properties to make this work with both themes.
Remove unused styles for the dropdown. It is now positioned by OOUI
(since T192505). This should have been done at the same time as
e1635fdc52.
Bug: T194120
Change-Id: I9cac0c9458ae8cc26c5f056bb26686f8ad50c493
Ensures that these styles are loaded *after* OOUI by making
them dependent on it, unlike DesktopArticleTarget.init
which isn't.
Change-Id: Ia1fff16432d20fb56707c5e21c6a930d2478e311
