Would you be up for having a similar button in a different location? The other obvious place that comes to mind is in the button list in the top right (http://i.avtok.com/image/0Z1w1h1k0U3R).

RE: D8598 — amazing! Thanks :)

It's 80% boilerplate and 20% sketchy code for "snap to previous monday and format it as %Y-%m-d" (this is to implement barebones weekly milestone support). A date control with search and sorting/grouping support would have been about 100 times more cargo-cultable (or proxyable), but the code is already written :P

To be clear, I'm less interested in who closed any given task (the task's owner is a very good approximation of this) and more interested in the close date.