Feature
* feat: Redesign teacher Kurono dashboard (1713)
* feat: Redesign teacher Kurono dashboard
* Fix test
* Fix subnav spacing and add new banner image
* Merge branch &39;master&39; into kurono_teacher_dashboard_redesign
* Merge branch &39;master&39; into kurono_teacher_dashboard_redesign
* Reduce logo width
* Do it properly ([`51af956`](https://github.com/ocadotechnology/codeforlife-portal/commit/51af956cb2c87151bb60242443c83f939af785c8))