One click billable/unbillable toggle in project view for easy cleanup

One of the most common Toggl clean-up tasks I have to do is to go through and check that things are correctly marked "billable" or "not billable". The reason for this is because of Toggl's awesome on the fly project creation - we often to forget to check the little box correctly in the heat of the moment. The thing is that it's really slow to fix, and once a project is set up wrong it's really slow to manually edit each incorrect past entry.

It would be great if you could click the dollar sign in the project summary list and toggle its billable state without having to drill down and edit the task and then save and reload the whole list.