Remove send button from chat compose area

[shawnborton]

Since we can just press enter to send a message, let's remove the send button.

Current:

Proposed:

[quinthar]

The current Send button is so glaringly out of place, I think removing it is CRITICAL.

[shawnborton]

Send button has been removed, however, we should look into making the text area automatically grow when you have a lot of text inserted into it. I'll open up a new issue.