HTML5: pushing layout changes from @tylercopeland
HTML5: cleanup session whiteboard view, remove whiteboard controls

Removed the controls that are not used anymore, are gonna be used only when
the html5 is allowed to be a presenter.
Merge pull request #292 from daronco/html5-bridge-layout-setup

HTML5 new HTML markup and design
HTML5: splitting the css files in several sections

So we can work on them in paralell to implement the new layout.
HTML5: showing/hiding elements when navbar buttons are clicked
Users list style updates
HTML5: impemeting the layout positioning for mobile devices
Public chat style updates
HTML: layout with fullsize components when in very small screens

For mobile phones on portrait mode, chat, user list and video are shown
taking the whole screen.
HTML5: remove all old css files and adjust what's left
Merge pull request #293 from daronco/html5-bridge-new-layout

HTML5 new layout, first version
 - add more logging
starting to be able to handle user connect
progress on changing 'user join' event
client now prints 'socket.on:connct' when the client connects
use can now connect to html5-client using new message format
fixed comment
now sends public chat messages using new message format
'all_slides' and move cursor events now working in new msg format
removed unecessary events handlers