Ops: cron MAILTO points at a personal address; logs die with instances

[mcfrank]

.ebextensions/crontab.txt has MAILTO=hjsmehta@gmail.com (a former developer's personal address) and Django logs go to /tmp, vanishing on instance replacement. Point MAILTO at the lab address (or drop it) and consider CloudWatch log shipping via .ebextensions. Est. half a day. (Catalogue item 18.)