If a message has been sent with a test key it’s a bit confusing to just
say ‘Delivered’ on the page, because it hasn’t gone to anyone’s phone.
So this commit adds a bit of hint text to disambiguate what ‘Delivered’
actually means in this context.
For text messages/emails it makes sense for ‘sending’ to be gray and
‘delivered’ to be black. But since we don’t show sending/delivered for
letters it doesn’t make sense for the text to change colour.
Since we’ve removed the table of notifications from the single
notification page there’s no way of knowing the status of a
notification.
This re-adds it in a way that’s similar to how it looks on inbound
messages.
completely mimicks the job status page, and as such, all the code and
templates have been taken from the job page. This page performs
exactly the same as the job page for now
* total, sending, delivered, failed blue boxes (though they'll just
read 0/1 for now.
* download report button (same as with job download, except without job
or row number in file)
* removed references to scheduled
* kept references to help (aka tour/tutorial) as that'll eventually
change over from a job to a one-off too
