Respond to a Thread

[daniellekirkwood]

Your use case

When a Thread has been created, I should be able to respond to that thread in the thread panel using the regular message composer.

Design is here:
https://www.figma.com/file/T309ztx0sNyOOK6NKVLHsK/Threads?node-id=1304%3A244141

This message does not show in the Timeline (unless the client does not have access to Threads).

[daniellekirkwood]

Removing Jano's assignment as Designs have been added to the issue