Moved ID to page-header && chat to the left (for students)
Basic chat now works.
Chat: global chat history is now held by the server
Chat for small groups mode now works.

I also started a little function that helps showing notifications
within the chat area.  Useful, but need further incorporation.
Better styles and user notifications
Scrolling now works even with notification messages.
Merge branch 'feature/basic_chat' into develop