Readding shortChatPane so that existing resources can still be shown

This is dependent on the changes in SolidOS/chat-pane#18, so do not merge until package.json reflects this update.

Partial fix for SolidOS/chat-pane#16

index.js

@@ -65,7 +65,7 @@ register(require('./transaction/period.js'))
 
 const chatPanes = require('chat-pane')
 register(chatPanes.longChatPane) // Long pane must have prio in case short pane tries to do a long pane
-// register(chatPanes.shortChatPane) // was './chat/chatPane.js'
+register(chatPanes.shortChatPane) // was './chat/chatPane.js'
 // register(require('./publication/publicationPane.js'))
 register(require('meeting-pane'))
 register(require('./tabbed/tabbedPane.js'))