Automatically start and finish coderetreats

[jthurne]

Some locations forget to update their status in Coderetreat Live. Some ignore Coderetreat Live altogether, while others forget to end their coderetreats. There is a lot going on during a coderetreat, and these mistakes are entirely understandable.

To make the app better show the status of the coderetreats, we could update Coderetreat Live to automatically start Coderetreates based on their scheduled start time (maybe an hour after the start time to give the real hosts a chance to start it). Likewise, the app could automatically end coderetreats that have been running for 10 hours (most coderetreats finish in less than 8 hours, so waiting 2 hours more gives some buffer for humans to more accurately stop the coderetreat).

I actually did this manually during GDCR 2015, with the help of a Google Spreasheet. In hindsight, there should be no reason to that manually (it is a lot of work).