Delay Dropbox polling by 5 seconds and dispatch only a single request

services/web/app/coffee/Features/Dropbox/DropboxWebhookController.coffee

@@ -10,6 +10,10 @@ module.exports = DropboxWebhookController =
 		logger.log dropbox_uids: dropbox_uids, "received webhook request from Dropbox"
 		if !dropbox_uids?
 			return res.send(400) # Bad Request
+			
+		# Do this in the background so as not to keep Dropbox waiting
 		DropboxWebhookHandler.pollDropboxUids dropbox_uids, (error) ->
-			return next(error) if error?
-			res.send(200)
+			if error?
+				logger.error err: error, dropbox_uids: dropbox_uids, "error in webhook"
+		
+		res.send(200)