events management by global controller

[renoust]

global controller will capture and dispatch events
event can be diverse:

• basic interaction events such as mouse position and so on, most events that are available from browsers (often captured through window, maybe we should look at how other libraries manage events, we are dependent from d3 and jqueryui, maybe they can provide some part of the management we can only wrap)
• our own events, application dependent
  it could be important, in order not to interfere with other events to manage our own "domain" of events, enabling us to pre-treat some (and hopefully to avoid browser/access dependent side effects on the client's side).
  @fabien, read part 4, chap 13 of JS Ninja