Update Preferences to use Bootstrap 5 and work correctly in the new portal

Preferences needs to be updated with the new bootstrap classes maybe have some work done on the accordions, so it works ok with the new 23 portal. There is a document which outlines how to carry out bootstrap 5 updates to the Sakai tools.

https://docs.google.com/document/d/1HCNLBswh5guaPLAEPkKnuadHBy8HKh_q3D5q-cAeUA8/edit#heading=h.45hbepdfresq