Update salary scales for 2020
Update salary scales as per https://www.admin.cam.ac.uk/reporter/2019-20/weekly/6588/section1.shtml#heading2-1
Closes #23 (closed)
Update salary scales as per https://www.admin.cam.ac.uk/reporter/2019-20/weekly/6588/section1.shtml#heading2-1
Closes #23 (closed)