Project-aware topmenu links need to be shown only when a project is
selected: so special handling must be handled, as it was in GWT.
As opposed to GWT however, it does not make sense to show these in
header in any case, since there is no notion of 'current project'
in menu anymore. So we just hide them for now, and we may show them in
the project page as well (but in a separate patch).
Change-Id: I180e63b648d2fc228e61c2ad0d485d3ab8ab31f4