Changed chat behaviour

added recoil value isMobile to determine which chat to display and
style. #1978

changed the player to actually span across the viewport without the
black borders around it.

web/components/chat/ChatTextField/ChatTextField.module.scss

@@ -1,5 +1,5 @@
 .root {
-  position: absolute;
+  position: relative;
   bottom: 0px;
   width: 100%;
   padding: .3rem;