Don't listen exclusively for keypress in a textarea

Could be a different element as well.

src/converse-chatview.js

@@ -96,7 +96,7 @@
 
                 events: {
                     'click .close-chatbox-button': 'close',
-                    'keypress textarea.chat-textarea': 'keyPressed',
+                    'keypress .chat-textarea': 'keyPressed',
                     'click .toggle-smiley': 'toggleEmoticonMenu',
                     'click .toggle-smiley ul li': 'insertEmoticon',
                     'click .toggle-clear': 'clearMessages',

src/converse-muc.js

@@ -242,7 +242,7 @@
                     'click .toggle-occupants a': 'toggleOccupants',
                     'click .new-msgs-indicator': 'viewUnreadMessages',
                     'click .occupant': 'onOccupantClicked',
-                    'keypress textarea.chat-textarea': 'keyPressed'
+                    'keypress .chat-textarea': 'keyPressed'
                 },
 
                 initialize: function () {