OEC-476, rake task to diff dept spreadsheet against current campus data; plus spec fix
OEC-476, diff feature: campus db against dept edits
Merge pull request #3202 from johncrossman/OEC-476

OEC 476, rake task to diff dept spreadsheet against current campus data
Merge pull request #3203 from raydavis/raywip

CLC-4561, CLC-4633, CLC-3812 Let Add User to Course be run standalone
CLC-4374 Follow-up on canvas-customization.js
Responding to a comment at https://github.com/ets-berkeley-edu/calcentral/pull/3199#discussion-diff-21859640