fix empty directive name

[bradNASA]

Theresa's suggested fix for using the directive type also as the directive name when name is empty for plan uploads.

[joshhaug]

Presumably this would mean that a directive with name == "" is not treated the same as a blank field.

[cartermak]

@joshhaug My thought too. I'd like that we can preserve an empty name, and only a None gets turned into the activity type name?

[joshhaug]

Discussed with Brad. If an empty string is specified as a directive name, it can cause issues in the timeline in 2.12.

[joshhaug]

@cartermak just saw your comment but not sure I understand your question. It looks like there is an issue in 2.12 that causes name=="" to prevent activities from appearing on the timelines.

[cartermak]

Is this a bug or an expected behavior? If this is a bug, and an empty name should generally be acceptable, then I think Aerie-CLI should support it and I expect Aerie would resolve. If an empty name is not allowed, then I might argue for explicit handling of that case on the client side (e.g., report an error) instead of defaulting to a behavior like automatically assigning a name.