Channel list layout and styling.

 On branch marionette_integration

	modified:   app/assets/javascripts/backbone/apps/properties/channels/templates/member.jst.hbs
	new file:   app/assets/stylesheets/components/channels_list.css.scss
Include Network ID in client side Channel models.

 On branch marionette_integration

	modified:   app/assets/javascripts/backbone/apps/properties/channels/channels_controller.js.coffee
	modified:   app/assets/javascripts/backbone/apps/properties/properties_app.js.coffee
	modified:   app/assets/javascripts/backbone/entities/channel.js.coffee