Use find instead of first in course page spec
Use find instead of first in course page spec

This is one source of intermittent test failures, since the `first` matcher does not wait if the element hasn't rendered yet.

WikiEducationFoundation/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard