Predict impact of drafted message

[alichtman]

Back End

Add to the messages list as if it were the last real message, and then only have 19 "real" messages to display + the predictive one?

Front End

Button inside the extension popup somewhere. Disappears once clicked.
When clicked, slide all messages up by one message slot.
Add in new message blob, opacity 50%.
Reset when they close the popup

[alichtman]

Leaving this for v2.