Add swap request tracking. Two new columns in expt table (swap_requests
and last_swap_req) track the count and last time a request was sent. The counters all get reset by idlecheck every time it runs unless it detects you as inactive. Then when you go to send a swap request, it will show you the info about how many have been sent and when the last one was, and will let you know if the swap request will also go to the proj leader if you send it. When you send the request, the email mentions how many reminders you've been sent already, and only gets cc'd to proj head on the third message (or more). Then it updates the count and the timestamp of the last request sent.