The new calculator that's based on templates has a reference to the @Entity for the template which should not be serialized.
Fixes#40
## How to test/replicate
1. Log in as a supervisor
1. Open a project that's new enough to use a grading report template with grade limits
1. Go to the "Finishing up" tab
1. Go to the sub-tab for an individual author
Reviewed-on: #59
Reviewed-by: Nico Athanassiadis <nico@dsv.su.se>
Co-authored-by: Andreas Svanberg <andreass@dsv.su.se>
Co-committed-by: Andreas Svanberg <andreass@dsv.su.se>
Andreas Svanberg
c6bd17d9ad