This PR implements a "Mark as paid" feature, which allows users to mark their own debts as paid. The marking is only for the user to keep note of which debts they have already paid, and does not affect the debt's status in the system. The treasurer can also see if users have marked their debt's as paid.
This PR implements a "Mark as paid" feature, which allows users to mark their own debts as paid. The marking is only for the user to keep note of which debts they have already paid, and does not affect the debt's status in the system. The treasurer can also see if users have marked their debt's as paid.