Feature: Support an Emoji selector in the chat widget (#773)

* Adds emoji widget to web widget
* Style fixes for the send button
* Adds cursor to emoji widget action buttons

app/javascript/dashboard/assets/scss/_woot.scss

@@ -9,7 +9,6 @@
 @import 'widgets/conv-header';
 @import 'widgets/conversation-card';
 @import 'widgets/conversation-view';
-@import 'widgets/emojiinput';
 @import 'widgets/forms';
 @import 'widgets/login';
 @import 'widgets/modal';