Fixs/url formats

Fixes: https://github.com/unikent/of-course/issues/270 https://github.com/unikent/of-course/issues/274 https://github.com/unikent/of-course/issues/262

* Show research structure tab for none taught pg programmes (displays programme_overview)
* Fix link for graduate school
* Fix link for campus
* Resources header moved to be above student profiles & leaflets
* Resources header only shows if there is at least one profile or subject leaflet

Note: graduate school link will require bullet on backend in order to keep current styles (it was the rewriting of this that was breaking the link)