Adds rspec view tests that expect the nav sidebar
to have a class that will cause the nav sidebar
to be rendered collapsed with or without js.
Tests the nav sidebar on the admin, group,
instance statistics, user profile and project
sidebars.
When the external wiki is enabled, the internal wiki link is replaced
by the external wiki url. But the internal wiki is still accessible.
In this change the external wiki will have its own tab in the sidebar
and only if the services are disabled the tab (and access rights)
will not be displayed.
