Fix status time

The first commit fixes typos that were preventing the status time from being saved.
The second commit removes every references to **etsy status time** and renames them into **status time**. That commit is a breaking change for current up and running installation of morgue - upon pulling, the affected users will have to run

```
alter table postmortems change etsystatustime statustime int(11) UNSIGNED NOT NULL;
```

I'd be happy to update the pull request, should we decide to keep **etsystatustime** as a field in the DB,