Inline message editing

[IanMayo]

We current show the form at the bottom of the screen.

But, the user may have several forms open at once.

Each time they press "Add" (or "New") an empty form gets inserted into the message stream.

Newly received messages will appear beneath it.

When user clicks on "Save" it gets sent, with a "Draft" status "true". It stays open.

When user clicks on "Send", it gets sent, with a "Draft" status "false". It is closed, and the read-only "received" style of message is displayed.

We may need to make the client windows wider to allow this to be investigated.

[lilitkarapetyan]

It's done with realtime editing and autosave on changes