unfocus chat input on enter

static/script.js

@@ -363,7 +363,6 @@ window.addEventListener("DOMContentLoaded", function() {
                     break;
                 case 'h':
                 case 'l':
-                    // avoid redundant work if already true
                     if (!me.keys) me.keys = {};
                     if (!me.keys[e.key]) me.keys[e.key] = true;
                     this._sendAction(e.key, 'keyDown')
@@ -396,6 +395,9 @@ window.addEventListener("DOMContentLoaded", function() {
                 if (e.key === 'Enter') {
                     this._onSendClick()
                 }
+                if (e.key === "Escape" && this._isTypingInChat()) {
+                    this.chatInput.blur();
+                }
             }
         }