Ability to name conversations in Help Desk

Tickets can sometimes end up with multiple conversations associated, but ours only show up as the linked email address and I guess an object ID. It’d be helpful to have some control over that naming so you can easily figure what conversation is what instead of having to go through each of them to work it out.

It’d also be helpful to close off individual conversations that are no longer relevant or active, and for those to maybe show with a [CLOSED] prefix and listed below any open ones.