Properly formatting sent notifications

[hmpf]

The styles currently in use for email and sms, is fine for dev but not very useful for production.

Email

Example, current email subject, before removal of object and parent_object:

"Incident at 2020-08-04 13:26:09.635804+00:00 [fre: fwfwrf: Object created via "create_fake_incident" (None) <ID >]

• An email subject is preferably
  • max 50 characters long
  • most important things first

Having the timestamp that early is not good. Maybe...

Argus: fre: fwfwrf: Object created via "create_fake_incident" (None) <ID > 2020-08-04 13:26:09.635804+00:00

"Argus" might also not be necessary.

An email has a body where we could, if we wanted, put tons of stuff.

SMS

• SMS is preferrably no longer than 160 characters, or it will be sent as an MMS.

Example, current experimental sms system, before removal of object and parent_object:

2020-08-04 13:26:09.635804+00:00 [fre: fwfwrf: Object created via "create_fake_incident" (None) <ID >]

I suspect we need to ask anticipated recipients what they would prefer...

[hmpf]

See #121

[katsel]

Blocked by #108 unless we want hard-coded formatting.