Add the capability of changing database field types when upgrading the database. - #2650

Add the capability of changing database field types when upgrading the database.#2650

Alex-Jordan merged 3 commits into

openwebwork:developopenwebwork/webwork2:developfrom

drgrice1:course-integrity-check-reworkdrgrice1/webwork2:course-integrity-check-reworkCopy head branch name to clipboard