[dependency] Add backbone mediator

[pierr]

Backbone mediator has been use on two project. It could be a good idea to add it as a dependency of the skeleton.

[sebez]

App-wide pub/sub could be a very funky feature used to uncouple components in the SPA.

It seems this feature is already provided by Marionette Application Channel API (on which we already have a dependency).

If the feature is the same, perhaps adding Backbone.Mediator would be redundant.

[pierr]

Yes but I don't want to have too much dependency on Marionette. Just for the app structure. The mediator is a really easy pattern. It also can be done direcly with backbone by getting Backbone.Events sucha as what is done fore transverse modals.

[pierr]

But it must be use with caution. The only use case for the moment are menu related event and dom event to propagate connexion or stuff like that.

[sebez]

I agree that such pattern shall be used wisely for specific cross-cutting concerns.