Ajax server

Hi

I have been working on the chat app using ajax. The messages are receieved a little bit slower, but you won't notice that in production.

You can test it via openshift: http://chat-ledfan.rhcloud.com
Login via a username listed below, The password is the same as the user

* bar
* barfoo
* derp
* derpina
* foo
* foobar
* herp
* herpina

Go to the chat app and wait until "Connected to the server" appears under the Create Conversation button. 
Open a new private browser window. Login with another user. Fill in one of the 2 windows the username of the other window. A new conversation appears on both windows. Click on it and start chatting. 

I hope you like it :) 
I think we should focus on using ajax. 

@karlitschek @Kondou-ger @Raydiation